# Notes on uniformity data

#### Kevin Wright

# checklist

1. Add data to agriat. Add man page. Edit NEWS, agridat.Rd
2. Add source to uniformity_paper.bib
3. Add citation to uniformity_paper.Rmd
4. Add info to 00_uniformity_trial_meta_data

ChatGPT: Can you find some examples of uniformity trials published in Polish scientific journals?

Minnesota Agricultural Experiment Station paper No. 1446 todo

Rothamsted scans

# —————————————————————————

# Searches

#### archive.org 2025.08.13

“uniformity trial” “optimum plot size” “optimum size of plots” “Optimum Size and Shape of Plots” “blank experiment” “tamanho de parcela”

#### Google

“uniformity trial data” “optimum size of plots” “Optimum Size and Shape of Plots” “plot shape and size” “field plot technique”

#### HathiTrust

“blank experiment” “plot technic” “plot technique” “uniformity trial”

# ToDo

## Iowa State

Parks Library Indian J of Ag Sciences, 1931-1968, S1 In2

Empire Journal of Experimental Agriculture

# Paper not found

Searched Archive.org for most of these (and found some) 2025.08.13.

Abraham, T.P. & Vachhani, M.V. 1964. Investigations on field experimental techniques with rice crop. Indian J. Agric. Sci. 34, 152-165.

Agarwal, K.N. (1973). Uniformity trial of Apple. Indian Journal of horticulture. 30:525-528. https://www.indianjournals.com/ijor.aspx?target=ijor:ijh&volume=30&issue=3and4&article=013 Paywall. Not available.

Agarwal, K.N. & Deshpande, M.R. 1967. Size and shape of plots and blocks in field experiments with dibbled paddy. Indian J. Agric. Sci., 37, 445-455.

Agarwal, K.N., Bavappa, K.V.A. and Khosla, R.K. (1968). A study of size and shape of plots and blocks an optimum number of experimental periods on arecanut. Indian Journal of Agricultural Sciences, 38, 444-460. Not found. Journal: http://epubs.icar.org.in/ejournal/index.php/IJAgS

Agnihotri, V. and Asrawal, M. C. 1996. Size and shape of plots and blocks for field experiments with Eucalyptus in Shivalik Hills. Indian Journal of Forestry, 19, 74-78. Not found.

Agnihotri, Y.; AGARWAL, M. C.. Uniformity Trials for Determination of Optimum Size and Shape of Plots/Blocks for Experimentation with Acacia catechu. Indian Forester, [S.l.], p. 711-716, aug. 1995. https://doi:10.36808/if/1995/v121i8/7202. Not found.

Ali, A.A.; Ammar, S.E.M.M. Optimum plot size and shape for trials of maize. Annals of Agricultural Science, Moshtohor 36(3): 1361-1372. https://eurekamag.com/research/012/808/012808132.php Not found.

Alwood, W. B. and Price, R. H. (1890). Suggestions regarding size of plats. Virginia Agricultural Experiment Station, Bul. No. 6 pp 20. Not found.

Bhatnagar, S.; Srivastava, O.P. and Lather, B. P. S. Optimum size and shape of plot for mustard. Annals of Agricultural Research. Not found.

Binns M. | Ogilvie I. | Armold N. | Lukosevicius P. (1983). Size of plots and blocks in agricultural experiments: an empirical study with cigarfiller tobacco. Indian Journal of Agricultural Sciences Volume 53, 706-712.

Bischoff, K.P.; Gravois, K.A.; Schexnayder, H.P.J.; Hawkins, G.L. (2001). The effect of harvest method and plot size on the estimation of sugarcane yield. Journal American Society of Sugar Cane Technologists 21: 51-60.

Bist (1975). Size and shape of plots and blocks in field experiments with potato crops in hills. Indian J. Agric. Sci, 45, 5-8.

Bonazzi, A. (1933). Errors in field experimentation with ratoon cane. Asoc. de Tec. Azucareros Cuba, Proc 7: 32-40. Looked hard, but could not find. Original probably in Spanish. Full publisher: Asociación de Técnicos Azucareros de Cuba.

Calzada Benza, J. 1957. El error experimental y la precision en los experimentos. Lima Peru, Estac. Expt. Agr. de La Molina, Bol. 67, 33 pp . Not found.

Chaudhary, G.K.; Prajapati, B.H.; Patel, J.K.; Prajapti, R.I.; Loria, J.M. (2011) Optimum size and shape of plot for field experiments on wheat under North Gujarat Condition. J. Ind. Soci. Agril. S

Chessmore, R. A. Thesis :Entitled An Evaluation of Some Field Plot Techniques for Testing Forage Grasses. Univ. of Nebr. 1952. https://digitalcommons.unl.edu/dissertations/AAIDP13618/ Paywall.

CRI (1985). Report of the Coconut Research Institute for 1985. (Ed. R Mahindapala), Lunuwila, Sri Lanka.

Fairchild, J. A. (1928). The Comparative Value of Systems of Replications and Size and Shape of Plots in Oats Nursery Trials. Thesis, Okla. Agr. and Mech. Coll. Stillwater, Okla. 1928. Not found.

Faqir Mohammad, Tariq Mahmood Bajwa; Sohail Ahmad. (2001). Size and Shape of Plots for Wheat Yield Trials in Field Experiments. International Journal Of Agriculture & Biology, 4, 397-402.

Fisher, Alan Charles (1973). A Technique for Designing Field Experiments Using Uniformity Trial Data. North Carolina State University at Raleigh. https://catalog.lib.ncsu.edu/catalog/NCSU508428 No electronic version.

French, M. H. (1956). Minimum size of experimental plots for the assessment of pasture yield. East African Agr. and Forestry Res. Organ. Rpt. 1956.

French, M. H. Errores asociados con el uso de pequeñas parcelas de prueba en las evaluaciones de rendimiento de pastos. Agron. Trop. 10, 71-76.

Galal, H.E.; E.G.ttouh Abou. (1971). Estimation of optimum plot size and shape for Egyptian cotton yield trials. Alexandria Journal of Agricultural Research 19(2): 233-238

Gopini, D.D.; Kabaria, M.M. and Vaishnani, N.L. (1970). Size and shape of plots in field experiments on groundnut. Indian Journal of agricultural science, 40, 1004-1010. Not found.

Gorski & Stefaniow. (1917) Zastosowanie rachunku prawdopodobienstwa do doswiadczen polowych Roczniki Nauk Rolniczych, 8. searched google books, hathi, archive. This paper has “more details” than the Landwirtschaflichen paper.

Gosh, G.L.M. & Sanyal, A.T. 1945. Techniques of field experiments in jute. Agri. Res. Memoire 4, Indian Central Jute Comm.

Gupta, J.P. and Raghavarao, D. (1969). A uniformity trial on onions. Journal of Indian Horticulture, 7, 184-187.

Gupta, J.P. and Raghavarao, D. (1971). Optimum Size of Plots for Experiments on the Weight of Onion Bulbs. Indian Journal of Horticulture, 28, 234-236.

Gupta, S. C.; Kauchik, L. S.; Yadava T. P. (1991). A study of size and shape of experimental plots with groundnut. Indian Journal of Agricultural Research, 25, 161-166. https://krishikosh.egranth.ac.in/handle/1/2040054 Restricted access.

Hamdi, A.; Shokr, E. M. H.; Sedhom, S. A.; Hassanein, S. A. A. (2003). Estimation of optimum plot size and shape for lentil yield trials. Egyptian Journal of Agricultural Research, 81, 1723-1734.

Handa, D.P., Sreenath, P.R., Sastry, J.A., Rajpal, S.K. and Shukla, N.P. (1982). Size and shape of plots and blocks for experiments with oats grown for fodder. Indian Journal of agricultural sciences, 52, 466-471. Not found.

Hoshyar Chand Sharma (1991). Some observations on estimation of plot size and shape, Bartlett’s Rate Index and yield loss adjustments. Journal of Indian potato Association, 18, 9-18.

Jayaram, K.; Venkataramu, M.N.; Sunderrajan, N.; Seetharam, A. (1981) Optimum size and shape of plots and blocks for field experiments in sunflower (Helianthus annuus Linn.) Mysore Journal of Agricultural Sciences 15(4): 512-518 https://eurekamag.com/research/001/422/001422535.php

Kaushik, L.S.; Kapoor, K.; Hasija, R.C.; Tyagi, C.S. (1989). A uniformity trial on moong (Vigna radiata (L) Wilczek) Indian Journal of Agricultural Research 23(3): 138-142 https://krishikosh.egranth.ac.in/handle/1/2040100 Restricted access.

Khan, Mujahid. 2015. Uniformity trial in raya (Brassica juncea). M.Sc. Dissertation. https://krishikosh.egranth.ac.in/handle/1/80362 Seems like paper is unlocked and should be here, but download fails. Archive.org does not have.

Khurana, A., Rai, L. and Gupta, S.N. (1992). A uniformity trial on soybean (Glycine max. L.). Haryana agricultural University Journal of research, 22, 225-228.

Krantz, F. A. (1922). A Preliminary Study of Field Plot Technique in Potato Yield Test. Rept, Potato Assoc. Am. 42-44. Not found.

Krantz, F. A. (1923) Further studies in field plot technique in potato yield tests. Proc. Tenth Ann. Meeting of the Pot. Assn of Amer, 174-179. Not found.

Kristiensen, K. and Ersboll, A.K. 1995. The use of Geostatistical methods in variety trials, where some varieties are unreplicated. Biuletyn Oceny Odmain (Cultivar Testing Bulletin), 26-27, 113-122. Not found.

Kumar, Manoj and Hasija (2002). A study of size and shape of plots with wheat. Annals of Agriculture Bio-research 7 (1), 89-93

Lajpat Rai, Gupta, S.N. and Rai, L. (1994). Optimum size and shape of plots in field experiments of soyabean (Glycine max. L.). Annals of biology Ludhiana, 10, 261-263.

Lakhera, M.L.; Singh, V.P.; Sundar, R. M. and Patel, N.M. (1995). Optimum size and shape of plot for field experiments on gram. Gujarat Agricultural University Research Journal, 21, 142-148. https://eurekamag.com/research/002/912/002912452.php Paywall.

Lakshmi, K. R. and Gadewar, A.U. (1989). Optimum plot size for field trials with yams. J. of Root Crops, 15, 25-27. https://eurekamag.com/research/001/901/001901900.php Paywall.

Larsen, B. R. (1898). Om metoder för fältförsök. In Ber. Andra nordiska Landsbrukskongressen in Stockholm 1897. P. 72-84. Discussion 85-94. This is probably the original description of the holtsmark.timothy.uniformity and larsen.timothy.uniformity datasets.

Lopes, S. J. et al. (2005). Experimental plot size in grain sorghum in different plant densities. June 2005; Pesquisa Agropecuária Brasileira 40(6):525-530.

Mahalanobis, P C; Chakravorti, S C; Banerjee, E A R. 1934. Influence of shape and size of plots on the accuracy of field experiments with rice, Chinsurah, Bengal Procedings of Indian Science Congress (Bombay) Sec Agricultural Statistics 21, 71. http://library.isical.ac.in:8080/xmlui/handle/10263/1793 Not found; pdf only contains abstract.

Mangat, N. S. (1984). Optimum size and shape of plot and block in cotton field experiments. Journal of Research-Punjab Agricultural University (India).

Medina Urrutia, V. M. and S. Becerra Rodriguez,J. L. Macias Gonzalez (1980). Optimum size and shape of experimental plots for research studies on Mexican lemon (Citrus aurantifolia). Agricultura tec. Mex. 1980 Vol.6 No.2 pp.93-105 ref.11

Menon, T.C.M. and Tyagi, B.N. (1971). Optimum size and shape of plots in experiments with mandarin orange. Indian Journal of agricultural science, 41, 857-861. https://eurekamag.com/research/000/153/000153659.php Not available.

Pandya, H.R.; Upadhyay, S.M>; Parmar, B.A. (2006). Analysis of uniformity trial on cotton. J. Ind. Soc. Agric. Statist, 60, 175-236.

Pimentel Gomes, F. (1987). Novos Aspectos do Tamanho Otimo das Parcelas em Experimentos Com Plantas Arbdreas (A New Contribution on the Problem of Plot Size in Experiments with Trees). Pesq. agropec. bras., Brasilia.

Prillwitz, P. M. H. H. (1929). Archief voor de thee cultuur, 19, 201. Not found. According to Eden (1935) Tropical Agriculturist, 84, this has data.

Rabe, C., E. Thomas, 1983, Die Bestimmung optimaler Teilstuckgroßen und Wiederholungszahlen fur den Landwirtschaftlichen Feldversuch. Archiv fur Gartenbau, 31/7: 317-331. https://www.jstor.org/stable/43657200 Paywall

Rambabu; Aarwal, M.C.; Somaraj, P. and Chinnamani, S. (1980). Size and shape of plots and blocks for field trials on natural grasslands in Nilgiris hills. Indian Journal of agricultural science, 50, 598-602. https://eurekamag.com/research/006/424/006424390.php Not found

Sardana (1967). Size and shape of plots and blocks in field trials with potato. Indian J. Agric. Sci,37, 348-355. Not found.

Saxena (1972). Optimum plot size for oat grown for fodder. Indian J. Agric. Sci., 42, 63-69. Not found.

Sarma, Y.R.B.; Rao, A.V.; Srinivasan, T.E (1977). Note on size and shape of plots and blocks in rice field experiments. Indian Journal of Agricultural Sciences 47(12): 639-641 https://eurekamag.com/research/000/707/000707085.php Paywall.

Schuster, W; Bretschneider-Hermann, N; Zschoche, K.-H. (1984). Untersuchungen zur Feldversuchstechnik von Winterraps. Versuche zur Teilstückgrösse, Teilstückform und zur Zahl der Wiederholungen [English: Investigations into experimental designs with winterrape experiments on plot size, plot-shape and numbers of replications]. Zeitschrift für Acker- und Pflanzenbau. [Eng: Journal of agronomy and crop science]. 1984, Vol 153, Num 6, pp 446-459.

Seif, R. D., (1957). Optimum Field Plot Size and Shape for Lima Bean Yields. Unpublished Ph.D. thesis. Ithaca, New York. Cornell University. https://newcatalog.library.cornell.edu/catalog/1151920 Not found. Physical copy at Cornell University.

Sen, A.R. (1963). Some techniques of experimentation with cloval tea based on a uniformity trial. Emp. J. Exp. Agri., 31, 296-310.

Sethi, A.S. (1985). A modified approach to determine optimum size and shape of plots in field experiments on maize grown on terraced land. Indian Journal of Agricultural Sciences, 36, 95-99.

Sethi, A.S.; Kapur, M.L. (1995). Optimum size and shape of experimental plots for sugarcane grown under Punjab conditions Journal of Research, Punjab Agricultural University 32(4): 418-425 https://eurekamag.com/research/002/912/002912450.php Paywall

Shamasundaran, K.S., Singh, K.P. and Mandhar, S.C. (2002). Standardization of optimum size and shape of plots for gerbera under naturally ventilated greenhouse condition. Indian Journal of Horticulture, 59, 431-434. http://www.indianjournals.com/ijor.aspx?target=ijor:ijh&volume=59&issue=4&article=019 Paywall.

Shu, S.C.; Park, S.H.; Yu, I.S.; Joo, Y.J.; Hong, Y.K. (1970). Studies on the optimum plot size, plot shape and number of replications in field experiments for wheat. Research Reports of the Office of Rural Development, S. Korea, Crops, 13: 95-99 https://eurekamag.com/research/014/696/014696398.php

Siao, Fu. (1954). Dissertation at University of Minnesota. https://www.google.com/books/edition/Uniformity_Trials_with_Cotton/tLKEDzeG9IEC?hl=en Not viewable. Probably the same data as in the hand-written manuscript by Siao.

Singh, R.P. (1989). Optimum plot size for yield trials on chillies. Indian Journal of Horticulture 46(3): 404-406 https://eurekamag.com/research/001/901/001901901.php

Sreenath, P.R. (1973). Size and shape of plots and blocks in field trials with sorghum. Indian Journal of Agricultural Sciences, 43, 110-112. Not found.

Srinivasan, C.S.; George, M.V.; Subbalakshmi, V.; Amarnath, C.H. (1994). Optimum plot size for field trials with Coffea arabica cv. Cauvery (Catimor) Journal of Coffee Research 24(2): 87-96.

Srinivasan, V.R.; Biswas, S.R.; Ramachander, P.R.; Reddy, B.M.C.; Prakash, G.S.; Dass, H.C. (1982). Estimation of optimum size and shape of plots and blocks for pineapple yield trials. Singapore Journal of Primary Industries 10(2): 107-115. https://eurekamag.com/research/001/074/001074791.php Paywall.

Tageldin, Mohamed hany Ahmed (1989). Effect of plot size, block size, and block shape on the performance of ryegrass-alfalfa mixtures and orchardgrass. Thesis (Ph.D)–University of Wisconsin–Madison, 1989. Not found. Physical copy at Univ Wisconsin Madison. TODO

Upadhyay, S. M., Prajapati, B.H., Raja, K.R.V. and Darji, V.B. (1994). Optimum plot size for summer paddy in the Navsari zone of Gujarat. Gujarat Agricultural University Research Journal, 19, 92-97. Not found.

Weber, Charles Robert. 1941. Statistical analysis of a uniformity trial of soybeans with reference to plot size and shape and a comparison of efficiency of various experimental designs. Univ of Illinois. Thesis. https://i-share-uiu.primo.exlibrisgroup.com/permalink/01CARLI_UIU/gpjosq/alma99265257912205899 Not found. Physical copy at Univ Illinois. TODO

Wray, William Dean (1941). Some Applications of Uniformity Trials. PhD, Cornell University. https://newcatalog.library.cornell.edu/catalog/302914 Not found. Physical copy at Cornell.

Yates, F., Vernon, A. J. and Nelson, S. W. (1964). An example of the analysis of uniformity trial data on an electronic computer. Empire Journal of Experimental Agriculture. 32 (125). https://eurekamag.com/research/014/342/014342010.php Not found. Physical copy at UNL Storage. TODO

Yun, K.H.; Park, S.H.; Lee, Y.M. (1968). An estimation of optimum plot size, shape and number of replications for yield performance trials of rice. Res. Rep. Office rur. Dev, Suwon, 11: 1, 53-7. Bibl. 21 https://eurekamag.com/research/014/341/014341511.php

Zuhlke, Thomas Albert (1968). Uniformity Trial in Pisum Sativum for Estimating Optimum Plot Size and Shape, Replication Number, and Relative Efficiency of Lattice Designs. https://search.library.wisc.edu/catalog/999876004102121 Not found. Physical copy at Univ Wisconsin Madison. TODO

# Reviewed papers

Afonja, Biyi (1968). Analysis of a Uniformity Trial on Cassava. Experimental Agriculture, 4(2), 135-141. https://doi.org/:10.1017/S0014479700022468 Reviewed. No data.

Aftab-i-Islam, M. Ashfaq, M. Idrees Ahmed. (1984) Sizes and shapes of plots for field plot experiments on wheat uniformity trial data. Pakistan Journal of Agricultural Sciences, Volume 21, Issue 3,4. https://www.tehqeeqat.com/english/articleDetails/36510 Reviewed. No data.

Ahring, R. M., Morrison, R. D., & Wilhite, M. L. (1959). Uniformity Trials on Germination of Switchgrass Seed 1. Agronomy Journal, 51(12), 734-737.

Aly, A.E.; Salem, S.A.; Shalaan, M.A. (1978). Optimum plot size and shape and relative efficiency of different designs of yield trials in rice Oryza sativa L. Alexandria Journal of Agricultural Research 26(2): 317-326 https://eurekamag.com/research/000/711/000711675.php Not found.

Ansari, M. A. A., and G. K. Sant (1943). A Study of Soil Heterogeneity in Relation to Size and Shape of Plots in a Wheat Field at Raya (Muhra District). Ind. J. Agr. Sci, 13, 652-658. https://archive.org/details/in.ernet.dli.2015.271748 agridat::ansari.wheat.uniformity

Arny, A. C. and H. K. Hayes. (1918) Experiments in field technic in plot tests. J. Agric. Res., 15, 251-262. Reviewed. No data.

Assis, Janilson & Sousa, Roberto & Linhares, Paulo & Cardoso, Eudes & Rodrigues, Walter & Pereira, Joaquim & Sousa, Robson & Medeiros, Aline & Silva, Neurivan & Andrade, Anderson & Gomes, Geovanna & Santos, Mateus & Alves, Lunara. (2020). Optimum plot size for field experiments in sesame. Australian Journal of Crop Science. 1957-1960. https://doi.org/10.21475/ajcs.20.14.12.2828. Reviewed. No data.

Awake, Girma Taye; Amsal Tarekegne; and D. G. Tanner. (2000). “Estimation of optimum plot dimensions and replication number for wheat experimentation in Ethiopia.” African crop science journal 8.1 (2000): 11-23. https://repository.cimmyt.org/handle/10883/2321 Reviewed. No data.

Awang, Yhya Bin & Khalid Bin Mohd. (1984). Determination of optimum plot size and suitable plot shape from a sweet corn uniformity trial. MARDI Res. Bull., 12, 224-229. http://jtafs.mardi.gov.my/jtafs/12-2/SWEET%20CORN.pdf No data

Bailey, M. A., and Trought, T. (1926). An account of experiments carried out to determine the experimental error of field trials with cotton in Egypt. Egypt Ministry of Agriculture, Technical and Science Service Bulletin 63, Min. Agriculture Egypt Technical and Science Bulletin 63. https://www.google.com/books/edition/Bulletin/xBQlAQAAIAAJ?pg=PA46-IA205 agridat::bailey.cotton.uniformity

Baker, G. A. and Huberty, MR and Veihmeyer, FJ. (1952) A uniformity trial on unirrigated barley of ten years’ duration. Agronomy Journal, 44, 267-270. https://doi.org/10.2134/agronj1952.00021962004400050011x agridat::baker.barley.uniformity

Baker, G. A.; and R. E. Baker (1953). Strawberry Uniformity Yield Trials. Biometrics, 9, 412-421. https://doi.org/10.2307/3001713 agridat::baker.strawberry.uniformity

Baker, G. A. and E. B. Roessler (1957). Implications of a uniformity trial with small plots of wheat. Hilgardia, 27, 183-188. https://hilgardia.ucanr.edu/Abstract/?a=hilg.v27n05p183 agridat::baker.wheat.uniformity

Bakke, Olaf Andreas. (1988). Tamanho e forma ótimos de parcelas em delineamentos experimentais. Dissertation. Escola Superior de Agricultura Luiz de Queiroz. https://teses.usp.br/teses/disponiveis/11/11134/tde-20181127-160559/pt-br.php Used Gomez rice uniformity.

Bancroft, T. A. et a1., (1948). Size and Shape of Plots and Distribution of Plot Yield for Field Experiments with Peanuts. Alabama Agricultural Experiment Station Progress Report, sec. 39. Table 4, page 6. http://hdl.handle.net/11200/1345 agridat::bancroft.peanut.uniformity

Barbacki & Fisher (1936). A test of the supposed precision of systematic arrangements. Ann. Eugen. Lond. 7, 189-193. Reviewed. Used the data from Wiebe.

Barber, Clarence W. (1914). Note on the Influence of Shape and Size of Plot in Tests of Varieties of Grain. Maine Agr. Expt. Sta. Bul. 226:76-84. 1914. https://www.google.com/books/edition/Annual_Report/QF84AQAAMAAJ Reviewed. No data.

Batchelor, L. D.; and H. S. Reed. (1918). Relation of the variability of yields of fruit trees to the accuracy of field trials. J. Agric. Res, 12, 245–283. https://books.google.com/books?id=Lil6AAAAMAAJ&lr&pg=PA245 agridat::batchelor.uniformity

Bayoumi, Tarek Youssef; S El-Demardash. Effect of water deficit on soil variability, plot size, shape and number of replications for chickpea. https://www.academia.edu/21549629/Effect_of_Water_Deficit_on_Soil_Variability_Plot_size_Shape_and_Number_of_Replications_for_Chickpea Reviewed. No data.

Beard, J.S. (1954). Investigations into experimental plot technique with black wattle. Empire Forestry Review, 33, 158-171. https://www.jstor.org/stable/42602653 Reviewed. No data.

Beattie, J. H. and Victor R. Boswell and E. T. Batten. (1936). Pot and plant variation in Virginia Peanuts. Proceedings Of The American Society For Horticultural Science, 34. https://archive.org/details/dli.ernet.26569/page/585/mode/2up?q=beattie Reviewed. No data.

Beckett, W.H.; Fletcher, S.R.B. (1929). A uniformity trial with maize. Gold Coast Dept Agric Bull 16: 222-226. https://babel.hathitrust.org/cgi/pt?id=coo.31924066682166&seq=470 Reviewed. Yield data for 15 plots.

Bhatt, Hitesh M. (1998). Plot technique in Potato. AAU, Anand. https://krishikosh.egranth.ac.in/handle/1/5810043200 Reviewed. No data.

Bose, R. D. (1935). Some soil heterogeneity trials at Pusa and the size and shape of experimental plots. Ind. J. Agric. Sci., 5, 579-608. Table 1 (p. 585), Table 4 (p. 589), Table 5 (p. 590). https://archive.org/details/in.ernet.dli.2015.271739 agridat::bose.multi.uniformity

Bose, S. S.; Ganguli, P. M., and Mahalanobis, P. C. The frequency distribution of plot yields and the optimum size of plots in a uniformity trial with rice in Assam. Indian J. Agric. Sci., 1936, 6 part 5, pp. 1107-22. https://archive.org/details/in.ernet.dli.2015.271737/page/n1263/mode Reviewed. No data.

Bose, S. S.; Khanna, K L; Mahalanobis, P C Note on the optimum shape and size of plots for sugarcane experiments in Bihar. India Journal of Agricultural Science 9, 807-816 https://hdl.handle.net/10263/1896 http://library.isical.ac.in:8080/jspui/handle/10263/1896 Reviewed. No data.

Boyhan, George E.; David B. Langston; Albert C. Purvis; C. Randell Hill. (2003). Research to determine suitable plot size and the number of replications in the field trials of sugarbeet. J. Amer. Soc. Hort. Sci., 128, 409-424. Reviewed. No data. Compared Hatheway’s method with Cochran and Cox’s method, the latter gave smaller number of plots.

Boyhan, George E., David B. Langston, Albert C. Purvis, C. Randell Hill. (2003). Optimum plot size and number of replications with short-day onions for yield, seedstem formation, number of doubles, and incidence of foliar diseases. J. Amer. Soc. Hort. Sci., 128, 409-424. https://doi.org/10.21273/JASHS.128.3.0409 Reviewed. No data.

Boyhan, George E. (2013). Optimum Plot Size and Number of Replications for Determining Watermelon Yield, Fruit Size, Fruit Firmness, and Soluble Solids. HortScience, 48, 1200-1208. https://doi.org/10.21273/HORTSCI.48.9.1200 Reviewed. No data.

Bradley, P. L. (1941). A study of the variation in productivity over a number of fixed plots in field 2. Dissertation: The University of the West Indies. Appendix 1a, 1b, 1c, 1d. https://uwispace.sta.uwi.edu/dspace/handle/2139/41259 agridat::bardley.multi.uniformity

Brewer, A. C. and R. Mead (1986). Continuous Second Order Models of Spatial Variation with Application to the Efficiency of Field Crop Experiments. Journal of the Royal Statistical Society. Series A (General), 149(4), 314–348. See page 325. http://doi.org/10.2307/2981720 Reviewed. No data. Used StVincent cotton data found at Rothamsted. agridat::hutchinson.cotton.uniformity

Brim, C. A. and D. D. Mason. (1959). Estimates of Optimum Plot Size for soybean Yield Trials. Agron. Journal, 51: pp. 331-335. https://doi.org/10.2134/agronj1959.00021962005100060008x Reviewed. No data.

Brown, A.R. and Morris, H.D. (1967), Estimation of Optimum Plot Size and Shape for Grain Sorghum Yield Trials. Agron. J., 59: 576-577. https://doi.org/10.2134/agronj1967.00021962005900060026x Reviewed. No data.

Brykczynski, Jerzy. Dokładność doświadczeń polowych w praktyce hodowlanej. (Accuracy of field experiments in breeding practice) Roczniki Nauk Rolniczych, 11 Page 249 looks like it might be a uniformity trial, measurements in percent. Page 264 summary in German. https://www.google.com/books/edition/Roczniki_nauk_rolniczych/mz0iAQAAIAAJ?hl=en&gbpv=1&bsq=gorski

Chapas, L.C. 1961. Plot size and reduction of variability in oil palm experiments. Emp Jour. Exp. Agric., 29, 212-224. https://archive.org/details/sim_empire-journal-of-experimental-agriculture_1961-07_29_115/ Reviewed. No data.

Chaves, L. J.; J. B. Miranda Filho (1992). Plot size for progeny selection in maize (Zea maysL.). Theoretical and Applied Genetics, 84, 963–970. https://doi.org/10.1007/bf00227411 Reviewed. No data.

Chaves, Lazaro Jose. (1985). Tamanho da percela para selecao de progenies de milho. Thesis, University of Sao Paulo. https://www.teses.usp.br/teses/disponiveis/11/11137/tde-20200111-130705/publico/ChavesLazaroJose.pdf

Cheesman, E. E., and Pound, F. J. Uniformity trials on Cacao. Tropical Agriculture, 9, 277-88. https://archive.org/details/tropical-agriculture_1932-09_9_9/page/276/mode/2up?q=%22uniformity+trial%22 Reviweed. No data.

Christidis, Basil G (1931). The importance of the shape of plots in field experimentation. The Journal of Agricultural Science, 21, 14-37. Table VI, p. 28. https://doi.org/10.1017/S0021859600007942 agridat::christidis.wheat.uniformity

Christidis, B. G. (1939). Variability of Plots of Various Shapes as Affected by Plot Orientation. Empire Journal of Experimental Agriculture 7: 330-342. Table 1. agridat::christidis.cotton.uniformity

G. Peter Y. Clarke and Katia T. Steanova. (2011). Optimal design for early-generation plant-breeding trials with unreplicated or partially replicated test lines. Aust. N. Z. Jour. of Stat., 53, 461-480. Reviewed. No data.

Collison, R. C. and J. D. Harlan. Technical bulletin No 194. Some relationships between soil properties and performance of Baldwin and Greening Apple Trees. New York State Agricultural Experiment Station https://babel.hathitrust.org/cgi/pt?id=uiug.30112019767000 Reviewed. Has data for a few trees.

Collison, R. C. and J. D. Harlan. Technical bulletin No 126. Annual variation in apple yields - a possible cause. New York State Agricultural Experiment Station https://babel.hathitrust.org/cgi/pt?id=uiug.30112019766267 Reviewed. No data.

Conners, Helen Elizabeth (1951). Field plot techniques for sweet potatoes obtained from uniformity trial data. Master’s Thesis, Iowa State University. No digital copy available. Reviewed. No data.

Coombs, G. E. and J. Grantham (1916). Field Experiments and the Interpretation of their results. The Agriculture Bulletin of the Federated Malay States, No 7. https://www.google.com/books/edition/The_Agricultural_Bulletin_of_the_Federat/M2E4AQAAMAAJ agridat::coombs.rice.uniformity

Cordeiro, Célia Maria Torres, João Eustáquio Cabral de Miranda, and Jarbas Campos. “Tamanho de parcelas e número de repetições em experimento de batatas.” Pesquisa Agropecuária Brasileira 17.9 (1982): 1341-1348. Reviewed. No data.

Crews, Julian W., Jones, G.L. and Mason, D.D. (1963). Field Plot Technique Studies with Flue-Cured Tobacco. I. Optimum Plot Size and Shape. Agron. J., 55: 197-199. https://doi.org/10.2134/agronj1963.00021962005500020033x Reviewed. No data.

Currence, T.M.; Krantz, F.A. (1936). The relation of plot size and shape to potato yield variations. Amer. Potato J 13, 310-313. https://archive.org/details/sim_american-journal-of-potato-research_1936-10_13_10/ Reviewed. No data.

Damor, Bhavika. (2019). Comparison of uniformity trial data with experimental data for plot technique. Department of Agricultural Statistics, B. A. College of Agriculture, Anand Agricultural University. https://krishikosh.egranth.ac.in/handle/1/5810169594 Reviewed. Not used. Has data for 3 uniformity trials, but the data just looks very strange. In Appendix I: Most cells are 1-2, but there is a 9. There are 500 numbers but only about 9 of them have “4” in the hundredths place. We would expect to see 50. It could be that the data were collected in non-kg weights and then converted to kg. In Appendix III, there are some plots along the left edge that are measured to 3 decimals (0.993, 0.631), but most of the field is measured to 2 decimals. Weird.

da Silva, Enedino Correa. (1974). Estudo do tamanho e forma de parcelas para experimentos de soja (Plot size and shape for soybean yield trials). Pesquisa Agropecuaria Brasileira, Serie Agronomia, 9, 49-59. Table 3, page 52-53. agridat::dasilva.soybean.uniformity https://ainfo.cnptia.embrapa.br/digital/bitstream/item/194024/1/Estudo-do-tamanho-e-forma-de-parcelas.pdf

da Silva, Jose Robson. TAMAHO DE PARCELA E EFEITO DE BORDADURA EM EXPERIMENTOS COM O MELOEIRO https://ppgfito.ufersa.edu.br/wp-content/uploads/sites/45/2021/01/Tese_Robson.pdf Reviewed. No data.

da Silva, Willerson Custódio; Mário Puiatti; Paulo Roberto Cecon; Leandro Roberto de Macedo; Tocio Sediyama. (2019) Estimation of optimum experimental plot size for taro culture. Ciência Rural, Santa Maria, v.49 https://doi.org/10.1590/0103-8478cr20180440 Reviewed. No data.

da Silva, Luiz Fernando de Oliveira; Katia Alves Campos; Augusto Ramalho de Morais; Franciane Diniz Cogo; Carolina Ruiz Zambon. Optimal plot size for experiments with radish. Revista Ceres 59(5):624-629 https://doi.org/10.1590/S0034-737X2012000500007 Reviewed. No data.

de Assis, J. P., de Sousa, R. P., Rodrigues, W. M., Linhares, P. C. F., Cardoso, E. de A., Soares Pereira, M. F., Araújo Paula, J. A. de, & Oliveira, A. da M. (2019). Optimum Size and Shape of Experimental Units for Cassava Cropping. Journal of Experimental Agriculture International, 31(6), 1–10. https://doi.org/10.9734/jeai/2019/v31i630090 Reviewed. No data.

de Sousa, Roberto (2013). Tamanho de parcela para experimentacao com girassol. Thesis, Universidade Federal Rural do Semi-Arido https://repositorio.ufersa.edu.br/server/api/core/bitstreams/535569a6-5993-40f3-a089-3464c2fd4b08/content Reviewed. No data.

de Sousa, Roberto Pequeno and Assis, Janilson Pinheiro de and Rodrigues, Walter Martins and Linhares, Paulo César Ferreira and Cardoso, Eudes de Almeida and Pereira, Maria Francisca Soares and Paula, José Aluisio de Araújo (2018). Optimum Plot Size for Experimental Cassava Production. Journal of Agricultural Science, 10, 231-237. Reviewed. No data. https://doi.org/10.5539/jas.v10n10p231

de Sousa, Roberto Pequeno; Paulo Sérgio Lima e Silva; Janilson Pinheiro de Assis; Paulo Igor Barbosa e Silva; Júlio César DoVale. 2015. Optimum plot size for experiments with the sunflower. Revista Ciencia Agronomica, 46, 170-175. https://doi.org/10.1590/S1806-66902015000100020 Reviewed. No data. Precision increased up to plot sizes about 5 m^2.

Davies, J. Griffiths (1931). The Experimental Error of the Yield from Small Plots of Natural Pasture. Council for Scientific and Industrial Research (Aust.) Bulletin 48. Table 1. agridat::davies.pasture.uniformity

Day, James Westbay (1916). The relation of size, shape, and number of replications of plats to probable error in field experimentation. Dissertation, University of Missouri. Table 1, page 22. https://hdl.handle.net/10355/56391 agridat::day.wheat.uniformity

Dorph-Petersen, K. 1949. Parcelfordeling i markforsog. Tidsskrift for Planteavl. 52, 111-175 https://dca.au.dk/publikationer/historiske/planteavl/ https://archive.org/details/danish-journal-of-plant-and-soil-science_1949_52_1 Reviewed. No data. Did not see anything that looked like a field of 12x43 plots. Mentioned in Kristensen (2003).

Draper, Arlen D. (1959). Optimum plot size and shape for safflower yield tests. Dissertation. University of Arizona. https://hdl.handle.net/10150/319371 agridat::draper.safflower.uniformity

Dutta, S. K., and HEATH, E. D. (1960) Size, shape, and number of plots for field experiments with tea. The Empire Journal of Experimental Agriculture, 28, 121. https://archive.org/details/sim_empire-journal-of-experimental-agriculture_1960-04_28_110 Reviewed. No data.

Eden, T. and E. J. Maskell. (1928). The influence of soil heterogeneity on the growth and yield of successive crops. Jour of Agricultural Science, 18, 163-185. https://archive.org/stream/in.ernet.dli.2015.25895/2015.25895.Journal-Of-Agricultural-Science-Vol-xviii-1928#page/n175 agridat::sawyer.multi.uniformity

Eden, T. (1931). Studies in the yield of tea. 1. The experimental errors of field experiments with tea. Agricultural Science, 21, 547-573. https://doi.org/10.1017/S0021859600088511 agridat::eden.tea.uniformity

Ehrenberg, P. (1915). Versuch eines Beweises für die Anwendbarkeit der Wahrscheinlichkeitsrechnung bei Feldversuchen. Die Landwwirthschaftlichen Versuchs-Stationen 87, 29-88. 41-100 https://www.google.com/books/edition/Die_Landwirthschaftlichen_Versuchs_Stati/qFPbIBaHZKUC agridat::larsen.timothy.uniformity

Elliott, F. C., Darroch, J.G. and Wang, H.L. (1952). Uniformity trials with spring wheat. Agronomy Journal, 44, 524-528. https://doi.org/10.2134/agronj1952.00021962004400100005x Reviewed. No data.

England, F. (1968). Non-sward densities for the assessment of yield in Italian ryegrass: II. Convenient plot and block size and shape. The Journal of Agricultural Science, 70(02), 105. https://doi.org/10.1017/s0021859600010923 Reviewed. No data.

Ersboll, Annette. Spatial and Temporal Variations with Applications in Agriculture. “Models in action”, Proceedings of a seminar series 1995/1996. Reviewed. No data.

Facco, Giovani; Cargnelutti Filho Alberto; Mendonça Alves Bruna; et. al. (2017). Basic experimental unit and plot sizes with the method of maximum curvature of the coefficient of variation in sunn hemp. African journal of agricultural research 12(6):415-423 https://doi.org/10.5897/AJAR2016.11814 Reviewed. No data.

Faria, Glaucia Amorim and Lopes, Beatriz Garcia and Peixoto, Ana Patrícia Bastos and Ferreira, Antonio Flávio Arruda and Maltoni, Kátia Luciene and Pigari, Lucas Bernardo (2020). Experimental plot size of passion fruit. Revista Brasileira de Fruticultura, 42. http://dx.doi.org/10.1590/0100-29452020125. Reviewed. No data.

Filho, Alberto; Cargnelutti; Marcos Toebe; Cláudia Burin; André Luis Fick; Gabriele Casarotto. (2011). Plot sizes and uniformity assays in turnip. Ciência Rural 41.9 (2011): 1517-1525. https://doi.org/10.1590/S0103-84782011005000119 Reviewed. No data.

Filho, Alberto Cargnelutti; Marcos Vinícius Loregian, Gabriel Elias Dumke, Felipe Manfio Somavilla, Samanta Luiza da Costa, Lucas Fillipin Osmari, Bruno Fillipin Osmari (2021). Optimal plot size in buckwheat. https://doi.org/10.5433/1679-0359.2021v42n2p501 https://www.uel.br/revistas/uel/index.php/semagrarias/article/view/39448/29330 Reviewed. No data

Filho, Alberto Cargnelutti, and Ismael Mario Marcio Neu, and Valeria Escaio Bubans, and Felipe Manfio Somafilla, and Bruno Fillipin Osmari. (2022). Method for estimating the optimal plot size for Black Oat, Common Vetch, and Forage Turnip intercropping. http://dx.doi.org/10.1590/1983-21252022v35n425rc Reviewed. No data.

Filho, Alberto Cargnelutti; and Valéria Escaio Bubans and Felipe Manfio Somavilla and Samanta Luiza da Costa and Gabriel Elias Dumke and Lucas Fillipin Osmari (2023). Optimal plot size in wheat with comparison of three methods. Revista Ciência Agronômica, v. 54, e20218267, 2023 https://periodicos.ufc.br/revistacienciaagronomica/article/view/85008 https://scielo.figshare.com/articles/dataset/Optimal_plot_size_in_wheat_with_comparison_of_three_methods/22268947 Reviewed. No data. Supplemental files are only figures.

Fleming, A.A., Roger, T.H. and Bancroft, T.A. (1957). Field plot technique with hybrid corn under Alabama conditions. Agronomy Journal, 49, 1-4. https://doi.org/10.2134/agronj1957.00021962004900010001x Reviwed. No data.

Forster, Howard Carlyle and Vasey, A. J. (1928). Experimental error of field trials in Australia. Proceedings of the Royal Society of Victoria. New series, 40, 70–80. https://www.biodiversitylibrary.org/page/54367272 Reviewed. agridat::forster.wheat.uniformity

Frey, K.J. and Baten, W.D. (1953). Optimum Plot Size for Oat Yield Tests. Agron. J., 45: 502-504. https://doi.org/10.2134/agronj1953.00021962004500100012x Reviewed. No data.

Garber, RJ and McIlvaine, TC and Hoover, MM. (1926). A study of soil heterogeneity in experiment plots. Jour Agr Res, 33, 255-268. Tables 3, 5. https://naldc.nal.usda.gov/download/IND43967148/PDF agridat::garber.multi.uniformity

Garber, R. J. and T. C. McIlvaine and M. M. Hoover (1931). A Method of Laying Out Experimental Plats. Journal of the American Society of Agronomy, 23, 286-298. https://archive.org/details/in.ernet.dli.2015.229753/page/n299 agridat::garber.multi.uniformity

Gardenhire, James H. (1949). Field Plot Technique and Plant Characteristic Studies with Varieties of Castor Plants. Thesis, Okla. Agr and Mech. Coll., Stillwater, Okla. https://shareok.org/handle/11244/43284 Reviewed. No data.

Garner, F. H.; Grantham, J.; Sanders, H. G. (1934). The value of covariance in analysing field experimental data. The Journal of Agricultural Science, 24(2), 250–. https://doi:10.1017/s0021859600006626

G. Geisler & J. Staab (1958) Versuchsanstellung im Weinbau. Vitis, 1, 257-281. https://core.ac.uk/download/235694455.pdf Figure 3 has a contour plot that appears to be a heatmap. Details are a bit unclear.

George, M. V.; M. Sannamarappa (1984). Uniformity trial: Size, Shape, and Direction of Experimental Plots for Turmeric. Proceedings of the Sixth Symposium on Plantation Crops, p. 429. https://archive.org/details/in.ernet.dli.2015.502074/page/n453 Reviewed. No data.

Gołaszewski, Janusz and Maria Idźkowska (1992). Odpowiednia wielkość jednostki eksperymentalnej w doświadczeniach polowychz łubinem żółtym (Lupinus luteus L.) (Convenient plot size in field experiments with yellow lupine (Lupinus luteus L.) ). Listy Biometryczne - Biometrical Letters. Vol. 29, No. 2, 3-11 https://bl.up.poznan.pl/full/BL%2029%202%201.pdf Reviewed. No data.

Gomez, K.A. and R. C. Alicbusan (1969). Estimation of optimum plot size from rice uniformity data. The Philippine Agriculturist. 52, 586-601 https://www.google.com/books/edition/The_Philippine_Agriculturist/2irOAAAAMAAJ No data. But published heatmaps of 4 fields shows one of them to be the same as used in Gomez & Gomez (1984).

Gomez, K.A. and Gomez, A.A. (1984). Statistical Procedures for Agricultural Research. Wiley-Interscience. Page 481. agridat::gomez.rice.uniformity

Gopalakrishna, S. (1992). Optimum plot size and shape, block size and shape and relative efficiency of designs for field experiments in navane (Setaria italica). Thesis. https://krishikosh.egranth.ac.in/handle/1/5810120871 Reviewed. No data.

Goulden, C. H. (1937). Efficiency in field trials of pseudo-factorial and incomplete randomized block methods. Canadian Journal of Research, 15. https://doi.org/10.1139/cjr37c-020 Reviewed. This paper used uniformity trials from other papers (Batchelor, Wiebe, etc).

Goulden, C. H. (1939). Methods of statistical analysis, 1st ed. Page 18. https://archive.org/stream/methodsofstatist031744mbp This version is 20x20. The full 48x48 data was obtained from Rothamsted. agridat::goulden.barley.uniformity

Gorski, M. and Stefaniow, M. (1917). Die Anwendbarkeit der Wahrscheinlichkeits-rechnung bei Feldversuchen. Die Landwirtschaflichen Versuchsstationen, 90, 225-240. https://www.google.com/books/edition/Die_Landwirtschaftlichen_versuchs_statio/qr8jAQAAMAAJ?hl=en&gbpv=1&pg=RA1-PA225 agridat::gorski.oats.uniformity

Goyal, Manoj Kumar. (1998). A Study of uniformity trial in wheat (Triticum aestivum L.). Thesis, Haryana Agricultural University. https://krishikosh.egranth.ac.in/handle/1/5810078304 . Reviewed. No data.

Guimarães, B. V. C., de Carvalho, A. J., Aspiazú, I., da Silva, L. S., da Silva, R. R. P., Pimenta, A. M. L., & Moura, M. M. A. (2021). Optimal plot size for experimentation of common beans (Phaseolus vulgaris L.) in the northern region of Minas Gerais, Brazil: Experimental plots. Revista de la Facultad de Ciencias Agrarias UNCuyo, 55-63, 1853-8665. https://doi.org/10.48162/rev.39.039 Reviewed. No data.

Guimarães, Bruno Vinícius Castro, et al. (2020). Optimal plot size for experimental trials with Opuntia cactus pear. Acta Scientiarum. Technology 42 (2020): e42579-e42579. https://doi.org/10.5539/jas.v11n18p206 Reviewed. No data.

Gupton, C.L. (1972). Estimates of Optimum Plot Size and Shape from Uniformity Data in Burley Tobacco (Nicotiana tabacum L.). Agron. J., 64, 678-682. https://doi.org/10.2134/agronj1972.00021962006400050038x Reviewed. No data.

Haapanen, Matti (1992). Effet of plot size and shape on the efficiency of progeny tests. Silva Fennica, 26, 201-209. Reviewed. No data.

Handa, D. P.; Sreenath, P. R., & Rajpali, S. K. (1995). Uniformity trial with lucerne grown for fodder. Grass and Forage Science, 50(3), 209–216. https://doi.org/10.1111/j.1365-2494.1995.tb02316.x Reviewed. No data.

Hansen, Niels Anton (1914). Prøvedyrkning paa Forsøgsstationen ved Aarslev. Tidsskrift for landbrugets planteavl, Bind 21, page 553. In Danish. https://dca.au.dk/publikationer/historiske/planteavl/ Reviewed. agridat::hansen.multi.uniformity

Haque, H. N. Azad, N. K. Jha, R. N. and Sing, S. N. (1988). Optimum Size and Shape of Plots for Wheat. Annals of Agricultural Research, 9, 165-170. https://eurekamag.com/research/001/901/001901913.php Reviewed. No data. The criterion for selection of optimum plot size should be CV and not the point of maximum curvature.

Hariharan, V., Jacob Thomas, M. George, K.C. (1986). Optimum size and shape of plots for field experiments in brinjal. Agricultural Research Journal of Kerala, 24(2), 189-194. https://krishikosh.egranth.ac.in/handle/1/5810100010 Reviewed. No data.

Haritonenko, Pavlo. Neue Präzisionsmethoden auf den Versuchsfeldern. Arbeiten der landw. Versuchsstation Iwanowskoje 1904-06, S. 159. In Russian with German summary. Original not found. Data appears in Roemer (1920).

Harris, J Arthur and Scofield, CS. (1920). Permanence of differences in the plats of an experimental field. Jour. Agr. Res., 20, 335-356. https://naldc.nal.usda.gov/catalog/IND43966236 agridat::harris.multi.uniformity

Harris, J. Arthur and Scofield, CS. (1928). Further studies on the permanence of differences in the plots of an experimental field. Jour. Agr. Res. 36, 15–40. https://naldc.nal.usda.gov/catalog/IND43967538 agridat::harris.multi.uniformity

Harris, J.A. 1920. Practical universality of field heterogeneity as a factor influencing plot yields. Journal of Agricultural Research, 19, 279–314. Page 296-297. https://books.google.com/books?id=jyEXAAAAYAAJ&pg=PA279 agridat::harris.multi.uniformity

Hartman, J. D.; and E. C. Stair (1942). Field plot technique studies with tomatoes. Proceedings Of The American Society For Horticultural Science, 41, 315-320. https://archive.org/details/in.ernet.dli.2015.240678 agridat::hartman.tomato.uniformity

Hatheway, W. H., and E. J. Williams. (1958). Efficient estimation of the relationship between plot size and the variability of crop yields. Biometrics, 14, 207-222. https://doi.org/10.2307/2527785 Reviewed. No data.

Hatheway, W.H., 1961 Convenient plot size. Agron.J., 53/4: 279-280. https://acsess.onlinelibrary.wiley.com/doi/10.2134/agronj1961.00021962005300040025x

Hatton, R. G.; N. H. Grubb & R. C. Knight (1928) Black Currant Variety Trials: Reliability of Results. Journal of Pomology and Horticultural Science, 4:4, 200-220. https://doi.org/10.1080/03683621.1925.11513282 Not used. Has data for 21 bushes * 4 years and 52 bushes * 4 years.

Hayes, H. K. and A. C. Arny (1917). Experiments in field technic in rod row tests. J. Agr. Res. 11, 399-419. Reviewed. No data.

Heath, O.V.S. (1970). Investigation by Experiment. Table 1. https://archive.org/details/investigationbye0000heat agridat::heath.raddish.uniformity

Heidmann, T. (1988). Startkarakterisering af arealer til systemforskning I. Forsøgsarealer, måleprogram og metoder. Tidsskrift for Planteavls Specialserie. S 1958, 89 pp. https://dca.au.dk/publikationer/historiske/planteavlspecial/ No data. No obvious data found for a field 26x20 plots. Mentioned in Kristensen (2003).

Heidmann, T. (1989). Startkarakterisering af arealer til systemforskning: IV Resultater fra arealet ved Jyndevad. Tidsskrift for Planteavls Specialserie. S 2021, 163 pp. https://dca.au.dk/publikationer/historiske/planteavlspecial/ No data. No obvious data found for a field 26x20 plots. Mentioned in Kristensen (2003).

Hidalgo, Eduardo Calero Calero (1965). Estudio Del Tamano Y Forma De La Parcela Experimental Para Ensayos De Campo En Frijol (Phaseolus vulgaris L.). Instituto Interamericano de Ciencias Agricolas de la OEA. https://www.google.com/books/edition/Estudio_Del_Tamano_Y_Forma_De_La_Parcela/rNIOAQAAIAAJ No data. In Spanish.

Hodnett, G.E. A Uniformity Trial on Groundnuts. Journal of Agricultural Science, 43, 323-328. https://doi.org/10.1017/S002185960005749X Reviewed. No data.

Holle, Michael. 1960. Plot technique for field evaluation of three characters in the lima bean. Master’s Thesis, Iowa State University. No digital copy available. Reviweed. No data.

Holtsmark, G and Larsen, B R (1905). Om Muligheder for at indskraenke de Fejl, som ved Markforsog betinges af Jordens Uensartethed. Tidsskrift for Landbrugets Planteavl. 12, 330-351. (In Danish) https://books.google.com/books?id=MdM0AQAAMAAJ&pg=PA330 https://dca.au.dk/publikationer/historiske/planteavl/ agridat::holtsmark.timothy.uniformity

Holtsmark, G. and Bastian R. Larsen (1907) Uber die Fehler, welche bei Feldversuchen, durch die Ungleichartigkeit des Bodens bedingt werden. Die Landwirtschaftlichen Versuchs-Stationen, 65, 1–22. (In German) https://books.google.com/books?id=eXA2AQAAMAAJ&pg=PA1

Hudson, H. G. (1939). Population studies with wheat: 1. Sampling. J. Agric. Sci, 29, 76-109. https://doi.org/10.1017/s0021859600051571 Reviewed. No data. The researchers collected about 7200 plots * 13 traits = 93,000 data points. Evaluation was only possible with the use of “Hollerith equipment”.

Humada-Gonzalez, G.G. (2013). Estimação do tamanho otimo de parcela experimental em experimento com soja. Dissertation, Universidade Federal de Lavras. http://repositorio.ufla.br/jspui/handle/1/744 Reviewed. The data published here are the same data as agridat::dasilva.soybean.uniformity.

Humada-Gonzalez, G.G.; Barbuio, R.; Cardozo, N.; MOREIRA, J.M.; Llanes Oviedo, L. Estimação do tamanho otimo de parcela experimental em experimento com soja transgenica. In: I semana de iniciação cientifica e I seminario integrado da Pos-graduação, 2018 Goias Brasil I semana de iniciação cientifica e I seminario integrado da Pos-graduação. 2018.

Humada González G. G., Ramalho de Morais A, Caballero Mendoza CA, Bortolini J, Rodrigues Liska G. (2018). Estimation of Optimum Plot Size in Experimentation with Sweet Potato. Agrociencia Uruguay, 22(2):e13. https://agrocienciauruguay.uy/index.php/agrociencia/article/view/13 Reviewed. No data.

Hutchinson, J.B. and V. G. Panse (1935). Studies in the technique of field experiments. The Indian Journal of Agricultural Sciences, 5, 523-538. https://archive.org/details/indian-journal-of-agricultural-sciences_1935-08_5_part-4 Reviewed. No data. Has a contour map of yields.

Idrees, Nadia; and Muhammad Inayat Khan (2009). Design improvement using uniformity trials experimental data. Pak. J. Agri. Sci., Vol. 46(4), 2009. https://pakjas.com.pk Reviewed. No data.

Igue, Toshio; Ademar Espironelo, Heitor Cantarella, Erseni Joao Nelli. (1991). Tamanho e forma de parcela experimental para cana-de-acucar (Plot size and shape for sugar cane experiments). Bragantia, 50, 163-180. Appendix, page 169-170. https://doi.org/10.1590/S0006-87051991000100016 agridat::igue.sugarcane.uniformity

Immer, F. R. (1932). Size and shape of plot in relation to field experiments with sugar beets. Jour. Agr. Research, 44, 649–668. https://naldc.nal.usda.gov/download/IND43968078/PDF agridat::immer.sugarbeet.uniformity

Immer, F. R. and S. M. Raleigh (1933). Further studies of size and shape of plot in relation to field experiments with sugar beets. Journal of Agricultural Research, 47, 591-598. https://naldc.nal.usda.gov/download/IND43968370/PDF agridat::immer.sugarbeet.uniformity

Iyer, P. V. Krishna (1942). Studies with wheat uniformity trial data. I. Size and shape of experimental plots and the relative efficiency of different layouts. The Indian Journal of Agricultural Science, 12, 240-262. Page 259-262. https://archive.org/stream/in.ernet.dli.2015.7638/2015.7638.The-Indian-Journal-Of-Agricultural-Science-Vol-xii-1942#page/n267/mode/2up agridat::iyer.wheat.uniformity

Jaggard, K. W. (1975). The size and shape of plots in sugar-beet experiments. Annals of Applied Biology, 80(3), 351–357. https://doi.org/10.1111/j.1744-7348.1975.tb01641.x Reviewed. No data.

Jain, M. B. Studies in the techniques of field trials in range lands I. Size, Shape and arrangement of plots.

Jain, M. B. and R. K. Bohra. Size and Shape of Plots and Blocks for field Experiments with Lasiurus Sindicus. Reviewed. No data.

James, W. C., & Shih, C. S. (1973). Size and Shape of Plots for Estimating Yield Losses from Cereal Foliage Diseases. Experimental Agriculture, 9(01), 63. https://doi.org/10.1017/s0014479700023693 Reviewed. No data.

Jegorow, M. (1909). Zur Methodik des feldversuches. Russian Journ Expt Agric, 10, 502-520. https://www.google.com/books/edition/Journal_de_l_agriculture_experimentale/510jAQAAIAAJ?hl=en Has a uniformity trial of oats. agridat::jegorow.oats.uniformity

Joachim, A.W.R. 1935. A uniformity trial with coconuts. Trop. Agric. Mag. Ceylon. Agric. Soc. 85:198-207. https://archive.org/details/tropical-agriculturist_1935-10_85 Reviewed. Has data. Each plot had 6 trees, the blocks are different sizes. Not used.

Johnson, I.J. & Murphy, H.C. 1943. Lattice and lattice square designs with oat uniformity data and in varietal trials. J. Agric. Sci., 22, 366-372. https://doi.org/10.2134/agronj1943.00021962003500040004x No data. Has a contour map of fertility.

Jolly, A. L. (1942). Uniformity trials on estate cacao fields in Grenada, B.W.I. Tropical Agriculture, 19, 167-174. https://archive.org/details/tropical-agriculture_1942-09_19_9 Reviewed. No data.

Jones, W.W.; T.W. Embleton; C.B. Cree. (1957). Number of Replications and Plot Sizes Required for Reliable Evaluation of Nutritional Studies and Yield Relationships with Citrus and Avocado. American Society for Horticultural Science, 69:208-216. Reviewed. No data. Fruit yields are much more variable than quality factors.

Jones, Marcus; Marin Harbur, and Ken J. Moore (2021). Automating Uniformity Trials to Optimize Precision of Agronomic Field Trials. Agronomy 2021, 11, 1254. https://doi.org/10.3390/agronomy11061254 agridat::jones.corn.uniformity Data from 12x12 corn expt.

Jua, Junagadh. Optimum plot size for field experiments on tomato – A statistical investigation. Thesis, Junagadh Agricultural University. https://krishikosh.egranth.ac.in/handle/1/5810006490. Reviewed. No data.

Justesen, S. (1932). Influence of Size and Shape of Plots on the Precision of Field Experiments with Potatoes. The Journal of Agricultural Science, 22(2), 366-372. doi:10.1017/S0021859600053685 https://doi.org/10.1017/S0021859600053685 Reviewed. No data. Conclusion: Long, narrow plots are most efficient (unless there is competition between rows).

Kadam, B. S. Kadam; and S. M. Patel. (1937). Studies in Field-Plot Technique With P. Typhoideum Rich. The Empire Journal Of Experimental Agriculture, 5, 219-230. https://archive.org/details/in.ernet.dli.2015.25282 agridat::kadam.millet.uniformity

Kalamkar, R.J. (1932). Experimental Error and the Field-Plot Technique with Potatoes. The Journal of Agricultural Science, 22, 373-385. https://doi.org/10.1017/S0021859600053697 agridat::kalamkar.potato.uniformity

Kalamkar, R. J (1932). A Study in Sampling Technique with Wheat. The Journal of Agricultural Science, Vol.22(4), pp.783-796. https://doi.org/10.1017/S0021859600054599 agridat::kalamkar.wheat.uniformity

Katyal, Visay (1994). Relative efficiency of neighbouring techniques over block design for field experiments with wheat on Sodic soils. J. Ind. Soc. Ag. Stat. 46, 231-234. Reviewed. No data.

Kaushik, L. S., R. P. Singh, and T. P. Yadava. (1977). A uniformity trial with mustard [India]. Indian Journal of Agricultural Sciences. Reviewed. No data.

Kavitha, B. (2010). Study on optimum plot size and optimum plot shape of soybean crop. https://krishikosh.egranth.ac.in/handle/1/84302 Reviewed. No data.

Keller, Kenneth R. (1949). Uniformity Trial on Hops, Humulus lupulus L., for Increasing the Precision of Field Experiments. https://doi.org/10.2134/agronj1949.00021962004100080011x Reviewed. No data.

Keller, K.R. (1951). Relative Efficiency of Rectangular and Triple Rectangular Lattice Designs Using Hop Uniformity Trial Data. Agron. J., 43: 93-96. https://doi.org/10.2134/agronj1951.00021962004300020009x Reviewed. No data.

Kempton, R. A. and C. W. Howes (1981). The use of neighbouring plot values in the analysis of variety trials. Applied Statistics, 30, 59–70. https://doi.org/10.2307/2346657 agridat::kempton.barley.uniformity

Kerr, H. W. (1939). Notes on plot technique. Proc. Internat. Soc. Sugarcane Technol. 6, 764-778. agridat::kerr.sugarcane.uniformity

Khan, Abdur Rashid and Jage Ram Dalal (1943). Optimum Size and Shape of Plots for Brassica Experiments in the Punjab. Sankhyā: The Indian Journal of Statistics,6, 3. Proceedings of the Indian Statistical Conference 1942 (1943), pp. 317-320 (4 pages). https://www.jstor.org/stable/25047782 agridat::khan.brassica.uniformity

Khan, Mujahid; Ramesh Chander Hasija; Des Raj Aneja; Manish Kumar Sharma (2016). A uniformity trial on Indian mustard for determination of optimum size and shape of blocks. Journal of Applied and Natural Science 8 (3): 1589 - 1593. Reviewed. No data.

Khan, Mujahid & R. C. HASIJA and NITIN TANWAR (2017). Optimum size and shape of plots based on data from a uniformity trial on Indian Mustard in Haryana. MAUSAM, 68, 67-74. https://doi.org/10.54302/mausam.v68i1.434 Reviewed. No data.

Khin, San. 1950. Investigation into the relative costs of rice experiments based on the efficiency of designs. Dissertation: Imperial College of Tropical Agriculture (ICTA). Appendix XV. https://uwispace.sta.uwi.edu/dspace/handle/2139/42396 agridat::khin.rice.uniformity

Khurana, Alka. (1991). A Study of Uniformity Trial in Soyabean. Thesis, Haryana Agricultural University. https://krishikosh.egranth.ac.in/handle/1/5810076525 Reviewed. No data. Smith’s Law.

Kiesselbach, Theodore A. (1917). Studies Concerning the Elimination of Experimental Error in Comparative Crop Tests. University of Nebraska Agricultural Experiment Station Research Bulletin No. 13. Pages 51-72. https://archive.org/details/StudiesConcerningTheEliminationOfExperimentalErrorInComparativeCrop https://digitalcommons.unl.edu/extensionhist/430/ agridat::kiesselbach.oats.uniformity

Kirk, L. E. (1929). Field plot technique with potatoes with special reference to the Latin square. Scientific Agriculture, 9, 719-729. https://babel.hathitrust.org/cgi/pt?id=chi.096360757&seq=733 agridat::kirk.potato.uniformity

E. J. Koch (1952). Plot technique in Small Fruits. Proceedings of the American Society for Horticultural Science v.62 https://babel.hathitrust.org/cgi/pt?id=osu.32435028190270&seq=44 Reviewed. Data are for different varieties.

Koch, E.J. and Rigney, J.A. (1951). A Method of Estimating Optimum Plot Size from Experimental Data. Agron. J., 43: 17-21. https://doi.org/10.2134/agronj1951.00021962004300010005x Reviewed. No data. Idea: The footnote of the paper says that this paper is part of an MS Thesis at North Carolina State. I was unable to find online.

Kotowski, Feliks. (1924). A criterion of field homegenity and its value in field trials. Roczniki Nauk Rolniczych, 11, 26-. https://www.google.com/books/edition/Roczniki_nauk_rolniczych/mz0iAQAAIAAJ Polish version on page 26. English abstract. agridat::kotowksi.potato.uniformity.

Kulkarni, R. K., Bose, S. S., and Mahalanobis, P. C. (1936). On The influence of shape and size of plots on the effective precision of field experiments with Juar (andropogon sorghum). Indian J. Agric. Sci., 6, 460-474. Appendix 1, page 172. https://archive.org/details/in.ernet.dli.2015.271737 agridat::kulkarni.sorghum.uniformity

Kumar, Manoj; Todarmal Poonia; Nitin Bhardwaj; Anurag. Optimum size and shape of plots based on data from a uniformity trial on wheat (Triticum Aestivum L.) in Haryana India. Plant Archives, 23, 180-184. https://doi.org/10.51470/PLANTARCHIVES.2023.v23.no1.030 Reviewed. Heatmap of plots 1m square, but not data given.

Kristensen, R. K. (1925). Anlaeg og Opgoerelse af Markforsoeg. Tidsskrift for landbrugets planteavl, Vol 31, 464-494. Fig 1, pg. 467. https://dca.au.dk/publikationer/historiske/planteavl/ agridat::kristensen.barley.uniformity

Kristensen, K. (2003). Incomplete split-plots in variety trials - based on a-designs. In: Biuletyn Oceny Odmian, 31, pp. 7-17. Reviewed. No data. Refers to other papers with uniformity trials.

Krysczun, Dionatan Ketzer; Lúcio, Alessandro Dal’Col; Sari, Bruno Giacomini; Diel, Maria Inês; Olivoto, Tiago; Santana, Cinthya Souza; Ubessi, Cassiane; Schabarum, Denison Esequiel (2018). Sample size, plot size and number of replications for trials with Solanum melongena L.. Scientia Horticulturae, 233(), 220–224. https://doi.org/10.1016/j.scienta.2018.01.044 Reviewed. No data.

Krysczun, Dionatan, Alessandro D. Lúcio, Bruno G. Sari, Maria I. Diel, Tiago Olivoto, José A. G. da Silva, Cinthya S. Santana, Patrícia J. Melo, & Sabrina M. Gomes. (2018). The Size of the Uniformity Trial Affects the Accuracy of Plot Size Estimation in Eggplant. Journal of Agricultural Science; Vol. 10, No. 11. https://www.researchgate.net/publication/328291020 Reviewed. No data.

Kuehl, R.O. and Kittock, D.L. (1969). Estimate of Optimum Plot Size for Cotton Yield Trials. Agron. Journal, 61: 584-586. https://doi.org/10.2134/agronj1969.00021962006100040031x No data.

Kumar, Ajay. 1999. A study on uniformity trial in sesame (Til) Sesamum indicum. https://krishikosh.egranth.ac.in/handle/1/5810078711. Reviewed. No data.

Kumar, Ajay; Kiran Kapoor; Gupta, S. C.; Hasija, R. C. Uniformity trial on sesame Sesamum indicum. https://eurekamag.com/research/017/592/017592269.php Not found. I did find Kumar’s thesis, but it had no data.

Lakhera, M.L.; M.A. Ali (1996). Optimum plot size and shape estimates for sunflower yield trials. Journal of Maharashtra Agricultural Universities 21(3): 350-353 Reviewed. No data. Optimum plot size was 20 units, 10 rows each 2 m long.

Lamb, J.A., Dowdy, R.H., Anderson, J.L. and Rehm, G.W. (1997). Spatial and Temporal Stability of Corn Grain Yields. Journal of Production Agriculture, 10: 410-414. https://doi.org/10.2134/jpa1997.0410 Reviewed. Has data for the same plots for 5 years, but it has been scaled to relative yield in each year, and the harvested area is only 20-foot long from each 60-foot long plot. Decided not to use.

Lambert, Edmund B. (1934). Size and arrangement of plots for yield tests with cultivated mushrooms. Journal of Agricultural Research, Vol 48, 971-980. https://naldc.nal.usda.gov/naldc/download.xhtml?id=IND43968493 Reviewed. Not used. Uniformity trial at three locations for mushrooms in growth houses.

Lambrecht et al (2024) Experimental plan for carrot culture Cienc. Rural 54 (10) https://doi.org/10.1590/0103-8478cr20230428 Reviewed. No data.

Lana, E. P. (1952) Field plot technique in vegetable crops. Proceedings of the American Society for Horticultural Science v.62, 21-30. https://babel.hathitrust.org/cgi/pt?id=osu.32435028190270&seq=44 Reviewed. Data are for different varieties.

Lander, P. E. et al. (1938). Soil Uniformity Trials in the Punjab I. Ind. J. Agr. Sci. 8:271-307. https://archive.org/details/indian-journal-of-agricultural-sciences_1938_8 agridat::lander.multi.uniformity

Lavezo, André; Alberto Cargnelutti Filho, Cláudia Marques de Bem, Cláudia Burin, Jéssica Andiara Kleinpaul, Rafael Vieira Pezzini. Plot size and number of replications to evaluate the grain yield in oat cultivars. Bragantia, Campinas, v. 76, n. 4, p.512-520, 2017. https://doi.org/10.1590/1678-4499.2016.410 Reviewed. No data.

Laycock, D. H. (1955). The effect of plot shape in reducing the errors of tea experiments. Tropical Agriculture, 32, 107-114. https://archive.org/details/tropical-agriculture_1955_32 agridat::laycock.tea.uniformity

Lehmann, A. Ninth Annual Report of the Agricultural Chemist For the Year 1907-08. Department of Agriculture, Mysore State. [2nd-9th] Annual Report of the Agricultural Chemist. https://books.google.com/books?id=u_dHAAAAYAAJ agridat::lehmann.millet.uniformity

Lessman, Koert James (1962). Comparisons of methods for testing grain yield of sorghum. Iowa State University. Retrospective Theses and Dissertations. Paper 2063. Appendix Table 17. https://dr.lib.iastate.edu/handle/20.500.12876/73575 agridat::lessman.sorghum.uniformity

Lessman, K.J. and Atkins, R.E. (1963). Optimum Plot Size and Relative Efficiency of Lattice Designs for Grain Sorghum Yield Tests. Crop Science, 3: 477-481 https://doi.org/10.2135/cropsci1963.0011183X000300060006x Reviewed. See Lessman thesis for data. agridat::lessman.sorghum.uniformity

Li, HW and Meng, CJ and Liu, TN. 1936. Field Results in a Millet Breeding Experiment. Agronomy Journal, 28, 1-15. Table 1. DOI: 10.2134/agronj1936.00021962002800010001x agridat::li.millet.uniformity

Ligon, L. L. (1930). Size of Plat and Number of Replications in Field Experiments with Cotton. Agronomy Journal, 22, 689-699. https://doi.org/10.2134/agronj1930.00021962002200080003x Reviewed. Not a uniformity test, but rather a ‘cultural’ test and a ‘varietal’ test.

Liji, Kumari (1997). Optimum size of plots in coconut using multivariate techniques. Thesis, Kerala Agriculture Univ. Reviewed. No data.

Lizy, M.J. (1986). Uniformity trials on colocasia. https://krishikosh.egranth.ac.in/handle/1/5810113181 Reviewed. No data.

Lizy, M. J.; K. C. George and Jacob Thomas (1988). Optimum Size and Shape of Plots Under Colocasia. Agric. Res. J. Kerala, 25, 241-248. http://14.139.185.57:8080/jspui/bitstream/123456789/4103/1/25_2_241-248_0002-1628.pdf Reviewed. No data.

Lizy, M.J.; George, K.C.; Thomas, M.J. (1988). Optimum size and shape of plots under colocasia (Colocasia esculenta L.) Agricultural Research Journal of Kerala 25(2): 241-248 https://eurekamag.com/research/001/901/001901914.php Paper not found, but Lizy thesis was found, but had no data.

Loesell, Clarence (1936). Size of plot & number of replications necessary for varietal trials with white pea beans. Thesis, Michigan State. https://d.lib.msu.edu/etd/5271 agridat::loesell.bean.uniformity

Lohmor, Nishu (2015). Estimation of optimum plot size, shape and number of replications in sunflower (Helianthus annuus). Thesis. https://krishikosh.egranth.ac.in/handle/1/81261 Reviewed. No data.

Lohmor, Nishu; Mujahid Khan; Kiran Kapoor; and Nitin Tanwar (2017). Study on Optimum Block Size and Shape in Uniformity Trial of Sunflower (Helianthus annuus). Advances in Research, 9, 1-8. 2017. Reviewed. No data.

Lord, L. (1931). A Uniformity Trial with Irrigated Broadcast Rice. The Journal of Agricultural Science, 21(1), 178-188. https://doi.org/10.1017/S0021859600008029 agridat::lord.rice.uniformity

Love, Harry (1937). Application of Statistical Methods to Agricultural Research. The Commercial Press, Shanghai. Page 411. https://archive.org/details/in.ernet.dli.2015.233346/page/n421 agridat::love.cotton.uniformity

Love, Harry H. (1943). Experimental Methods in Agricultural Research. The Agr. Exp. Sta. of the University of Puerto Rico. Rio Piedras Puerto Rico. Has data for 400 plots in sugar cane (according to Mendez). agridat::love.sugarcane.uniformity

Love, H.H. and W.T. Craig (1938). Investigations in plot technic with small grains. Cornell University, Memoir 214. https://catalog.hathitrust.org/Record/011481484 Reviewed. No data. Described 3 trials with 600 plots.

Lorentz, Leandro Homrich; Alexandra Augusti Boligon; Lindolfo Storck; Alessandro Dal’Col Lúcio. (2010). Plot size and experimental precision for sunflower production. Sci. Agric. (Piracicaba, Braz.), v.67, n.4, p.408-413. Reviewed. No data.

Love, H. H. (1936). Are Uniformity Trials Useful?. Agronomy Journal, 28(3), 234. https://10.2134/agronj1936.00021962002800030007x Reviewed. No data.

Lu, ChunTang et al (1995). Estimation of optimum plot size and replicates number using data from rice uniformity trials. J. of Agricultural Research of China, 44, 229-241. https://scholars.tari.gov.tw/handle/123456789/12019?locale=en No data.

Lúcio, A. D. C., Nunes, L. F., Rego, F., & Pasini, M. P. (2016). Relations between zero-inflated variables in trials with horticultural crops. Spanish Journal of Agricultural Research, 14(2), 17. https://dialnet.unirioja.es/servlet/articulo?codigo=6802883 Reviewed. No data.

Lúcio, A. D. C., & Benz, V. (2016). Accuracy in the estimates of zucchini production related to the plot size and number of harvests. Ciência Rural, 47. https://doi.org/10.1590/0103-8478cr20160078 Reviewed. No data.

Lucyamma, Mathew. (1986). Standardization of field plot technique for cashew. Diss. Department of Statistics, Kerala Agricultural University. https://krishikosh.egranth.ac.in/handle/1/5810142095 Reviewed. No data. Page 34 has details. 294 trees, 8 years (combined into 4).

Lyon, T.L. (1911). Some experiments to estimate errors in field plat tests. Proc. Amer. Soc. Agron, 3, 89-114. Table III. https://doi.org/10.2134/agronj1911.00021962000300010016x agridat::lyon.potato.uniformity

MacDonald, D. and Fielding, W. L. and Ruston, D. F. (1939). Experimental methods with cotton: I. The design of plots for variety trials. The Journal of Agricultural Science, 29, 35-47. http://dx.doi.org/10.1017/S0021859600051534 Reviewed. No data. Two heatmaps of fields.

Magistad, O. C.; & C. A. Farden (1934). Experimental Error In Field Experiments With Pineapples. Journal of the American Society of Agronomy, 26, 631–643. agridat::magistad.pineapple.uniformity

Masood, M Asif and Irum Raza and Muhammad Yaseen. 2012. Estimation of optimum field plot size and shape in paddy yield trial. Pakistan J. Agric. Res., Vol. 25 No. 4, 2012 agridat::masood.rice.uniformity

McClelland, Chalmer Kirk (1926). Some determinations of plat variability. Agronomy Journal, 18, 819-823. https://doi.org/10.2134/agronj1926.00021962001800090009x agridat::mcclelland.corn.uniformity

McGuire, Judson U. (1954). Uniformity Data From European Corn Borer, Pyrausta Nubilalis Hbn., Populations. [Ames, Ia.: s.n.], 1954. https://hdl.handle.net/2027/umn.31951000404095s Reviewed. This publication has data relating to corn borer infestation of thousands of individual corn plants. Not used.

McHatton, T.H. 1947. The comparison of plot size in a peach experiment Proceedings American Society Hort Science 49: 18-20 https://archive.org/details/dli.ernet.20746/page/17/ Reviewed. No data.

Meier, V.D. and Lessman, K.J. (1971). Estimation of Optimum Field Plot Shape and Size for Testing Yield in Crambe abyssinica Hochst. Crop Science, 11: 648-650. https://doi.org/10.2135/cropsci1971.0011183X001100050013x Reviewed. No data. Idea: There could be a thesis by Meier at Perdue University. I have looked online but not found anything.

Mercer, WB and Hall, AD, (1911). The experimental error of field trials The Journal of Agricultural Science, 4, 107-132. Table 1. https://doi.org/10.1017/S002185960000160X agridat::mercer.mangold.uniformity agridat::mercer.wheat.uniformity

Miller, John D., and E. James Koch. (1962) “A Plot Technique Study with Birdsfoot Trefoil”. Agronomy Journal, 54, 95-97. https://acsess.onlinelibrary.wiley.com/doi/abs/10.2134/agronj1962.00021962005400020001x Reviewed. No data.

Mitscherlich, E. Alfred (1919). Feldversuche mit kartoffeln. Landwirtschaftliche Jahrbucher, 54, 703-746 https://archive.org/details/landwirtschaftliche-jahrbucher-v-54-1919-20/page/702/ Reviewed. No data (that I can see).

Mitscherlich, Alfred and Franz Dühring. (1921). Über die Größe der Teilstücke bei Feldversuchen. Die Landwirtschaftlichen Versuchsstationen. Bd. XCVIII. 1921 p. 365-383. https://archive.org/details/dielandwirtschaf9819reun/page/364/mode/2up Reviewed. No data given. Used the same datasets as Roemer (1920).

Miyaska, Susan C.; Charles E. McCulloch, Graham E. Fogg, James R. Hollyer. Optimum Plot Size for Field Trials of Taro (Colocasia esculenta). HortScience 48, 435-443. https://doi.org/10.21273/HORTSCI.48.4.435 Reviewed. No data. Optimum plot size was 18-21 plants (4.9 - 5.7 m^2).

Modjeska, Janet She Some aspects of spatial analysis of uniformity data. Inst. of Statistics Mimeo Series No 1345. Used data from Batchelor & Reid.

Modjeska, J. S., & Rawlings, J. O. (1983). Spatial Correlation Analysis of Uniformity Data. Biometrics, 39(2), 373. https://doi.org/10.2307/2531010 Used data from Batchelor & Reid.

Mohammed, Ali Abulgasim. The analysis of autonormal moels and their correlation struture as applied to uniformity data. Institute of Statistics Mimeograph Series No. 1313. Reviewed. No data.

Montgomery, E. G. (1912). Variation in Yield and Methods of Arranging Plats To Secure Comparative Results. Twenty-Fifth Annual Report of the Agricultural Experiment Station of Nebraska, 164-180. https://books.google.com/books?id=M-5BAQAAMAAJ&pg=RA4-PA164 agridat::montgomery.wheat.uniformity

Montgomery, E. G. (1913). Experiments in Wheat Breeding: Experimental Error In The Nursery and Variation in Nitrogen and Yield. U.S. Dept of Agriculture, Bureau of Plant Industry, Bulletin 269. Figure 10, page 37. https://doi.org/10.5962/bhl.title.43602 agridat::montgomery.wheat.uniformity

Moore, John F and Darroch, JG. (1956). Field plot technique with Blue Lake pole beans, bush beans, carrots, sweet corn, spring and fall cauliflower. Washington Agricultural Experiment Stations, Institute of Agricultural Sciences, State College of Washington. https://babel.hathitrust.org/cgi/pt?id=uiug.30112019919072&view=1up&seq=33&skin=2021 agridat::moore.uniformity

Mortensen, M. L. (1911). Die Technik der Feldversuche (The Technique of Field Experiments). Jahresbericht der Vereinigung für Angewandte Botanik, 9, 177-187. https://www.biodiversitylibrary.org/item/36059#page/573/mode/1up No data.

Mountier, N. S. Plot size and guard rows in potato experiments. New Zealand Journal of Agricultural Research, 7, 180-197. No data.

Muniya, Sejal ben. (2017). Plot size study through mathematical approach. Thesis, Agricultural University Anand. https://krishikosh.egranth.ac.in/handle/1/5810115216 Reviewed. No data.

Murray, D.B. (1950). A uniformity trial with swamp rice. Tropical Agriculture, 27, 105-107. https://archive.org/details/tropical-agriculture_april-june-1950_27_4-6 Reviewed. No data.

Murray, E. K. S. (1934). The value of a uniformity trial in field experimentation with rubber. The Journal of Agricultural Science, 24(2), 177-184. https://doi.org/10.1017/s0021859600006572 Reviewed. Not used. Has 2 years of 5x5 grid from rubber trees. Based on data archived at Rothamsted, so not used at this time. We will see if I can get the original data.

Nagai, Violeta (1978). Tamanho da parcela e numero de repeticoes em experimentos com morangueiro (Plot size and number of repetitions in experiments with strawberry). Bragantia, 37, 71-81. Table 2, page 75. https://doi.org/10.1590/S0006-87051978000100009 agridat::nagai.strawberry.uniformity

Nagardas, Motaka Ganapatlal (2006). Plot size study from uniformity trial data in durum wheat for Bhal region. https://krishikosh.egranth.ac.in/handle/1/5810115906 Reviewed. No data.

Nair, Remesh B.; P. v. Prabhakaran (1983). Optimum size and shape of plots in field experiments with cashew. Agric Res J Kerrala, 21, 27-34. Reviewed. No data.

Nair, B. Gopakumaran Nair, (1984). Optimum plot size for field experiments on turmeric (Curcuma longa L) Thesis, Department of Statistics, College of Veterinary & Animal Sciences, Mannuthy. https://krishikosh.egranth.ac.in/handle/1/5810147397 agridat::nair.turmeric.uniformity

Narain, R.; and A. Singh, (1940). A note on the shape of blocks in field experiments. Ind. J. Agr. Sci., 10, 844-853. Page 845. https://archive.org/stream/in.ernet.dli.2015.271745 agridat::narain.sorghum.uniformity

Narayanan, R (1974). Estimation of optimum plot size for clone trials in hevea. Journal of the Rubber Research Institute of Malaysia 24(1): 54-67. https://rios.lgm.gov.my/cms/fedDigiJournalDetail.jsp?searchText=&selTab=digiCon&id=&type=JRR&issueYear=1974 Reviewed. No data.

Narayanbhai, P.J. (2005). Plot size study from uniformity trial data of French bean. https://krishikosh.egranth.ac.in/handle/1/5810115923 Reviewed. No data.

Neyman, J., & Iwaszkiewicz, K. (1935). Statistical problems in agricultural experimentation. Supplement to the Journal of the Royal Statistical Society, 2(2), 107-180. Reviewed. Used datasets from other papers.

Nokoe, Sagary & Rodomiro Ortiz (1998). Optimum Plot Size for Banana Trials. HortScience 33, 130-132. https://hdl.handle.net/10568/95942 Reviewed. No data.

Nonnecke, Ib Libner. (1958). Yield variability of sweet corn and canning peas as affected by plot size and shape. Thesis at Oregon State College. https://hdl.handle.net/1957/23367 agridat::nonnecke.peas.uniformity agridat::nonnecke.sweetcorn.uniformity

Nonnecke, I. L. (1959). Precision of field experiments with vegetable crops as influenced by plot size and shape I Sweet Corn. Canadian Journal of Plant Science, 39, 443-457. https://archive.org/details/sim_canadian-journal-of-plant-science_1959-10_39_4 https://doi.org/10.4141/cjps64-011 Reviewed. No data.

Nonnecke, I. L. (1959). Precision of field experiments with vegetable crops as influenced by plot size and shape I Sweet Corn. Canadian Journal of Plant Science, 39, 443-457. https://archive.org/details/sim_canadian-journal-of-plant-science_1959-10_39_4 https://doi.org/10.4141/cjps64-011 Reviewed. No data.

I. L. Nonnecke, 1960. The precision of field experiments with vegetable crops as influenced by plot and block size and shape: II. Canning peas. Canadian Journal of Plant Science, 40(2): 396-404. https://doi.org/10.4141/cjps60-053 https://archive.org/details/sim_canadian-journal-of-plant-science_1960-04_40_2

Nonnecke, I. L. and K. W. Smillie (1964). Precision of field experiments with vegetable crops as influenced by plot size and shape III Potatoes. Canadian Journal of Plant Science, 44, 57-65. https://doi.org/10.4141/cjps64-011 Reviewed. No data.

Obsi, Dechassa (2008). Application of Spatial Modeling to the Study of Soil Fertility Pattern. MS Thesis, Addis Ababa University. Page 122-125. http://etd.aau.edu.et/handle/123456789/3221 agridat::obsi.potato.uniformity

Odland, TE and Garber, RJ. (1928). Size of Plat and Number of Replications in Field Experiments with Soybeans. Agronomy Journal, 20, 93–108. https://doi.org/10.2134/agronj1928.00021962002000020002x agridat::odland.soybean.uniformity

Oliveira, Augusto (1945). Ensaios de uniformidade Agronomia Lusitana, 7, 207-244. https://archive.org/details/agronomia-lusitana_1945_7_3/page/n39/mode/2up?q=%22uniformity+trial%22 agridat::deoliveira.lupin.uniformity

Oliveira, Augusto (1948) ESTUDOS DE ESTATISTICA AGRONOMICA IV IMPORTÂNCIA DA AMOSTRAGEM NA EXPERIMENTAÇÃO AGRÍCOLA Agronomia Lusitana, 10, 201-229. https://archive.org/details/agronomia-lusitana_1948_10_3/page/200/mode/2up?q=%22uniformity+trial%22 Has individual yields of 3200 potatoes. But the plants are not necessarily adjacent, plots are not uniform in size.

Omanakuttan, Chithra (2015). Plot size study from uniformity trial data of mustard (Brassica juncea L.). M.S. Thesis, Sardarkrushinagar Dantiwada Agricultural University. https://krishikosh.egranth.ac.in/handle/1/5810116905 Reviewed. No data.

Onate, Burton. 1965. Size and Shape of Plot in Rice Replicated Field Experiments. Philippine Statistician. Reviewed. No data. Results indicate that plot of dimensions 4 rows by 12 hills (3-5 sq m) will be relatively as efficient as bigger plots. The CV observed was about 10 percent, which implies 5 replicates are needed to detect a mean difference of 10 percent.

Oscar Morgan, J. Some Experiments to Determine the Uniformity of Certain Plats for Field Tests. Agronomy Journal, 1, 58-67. https://doi.org/10.2134/agronj1907-1909.00021962000100010015x Reviewed. Has relative yields for 1x63 plots of wheat followed by fodder corn in the same season. Not included in agridat because the experiment is only 1 plot wide.

Oliveira, Sérgio José Ribeiro de. (2005). Dependência entre o tamanho da unidade básica e as estimativas das dimensões da parcela experimental de batata. http://repositorio.ufsm.br/handle/1/3234 Diss. Universidade Federal de Santa Maria, 2005. Reviewed. No data.

Oliveira, Sérgio José Ribeiro; Lindolfo Storck; Sidinei José Lopes; Alessandro Dal’Col Lúcio; Sandra Feijó; Henrique Perin Damo. Plot size and experimental unit relationship in exploratory experiments. Sci. Agric. (Piracicaba, Braz.), v.62, n.6, p.585-589, Nov./Dec. 2005 https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=20c098e72ced7c01cb15851b05a1eaf42b5be18f Reviewed. No data.

Paardekooper, E.G. (1966). Results of four uniformity trials to determine the influence of plot size and shape on the efficiency of field experiments in rubber. Res. At-chs Rubb. Res. Inst. Malaya, Docum. 56. Reviewed. No data.

Paez Bogarin, Gilberto (1962). Estudios sobre tamano y forma de parcela para ensayos en cafe. Instituto Interamericano de Ciencias Agricolas de la O.E.A. Centro Tropical de Investigacion y Ensenanza para Graduados. Costa Rica. https://www.google.com/books/edition/Estudio_Sobre_Tamano_Y_Forma_de_Parcela/7ScOAQAAIAAJ agridat::paez.coffee.uniformity

Pal, Satyabrata; Ayanendranath Basu; Goutam Mandal; Asim Kumar Chakraborty; Arunava Ghosh (2016). A State of the Art Review on Methods of Determination of Robust Optimum Plot Size. International Journal of Science and Technology, 6. Reviewed. No data.

Pal, Satyabrata; Satyananda Basak; Subhabaha Pal; Sanpei Kageyama (2007). On determination of optimum size and shape of plots in field trials. Biometrical Letters, 44, 23-31. Reviewed. No data.

Pal, Satyabrata; Goutam Mandal; Kajal Dihidar. (2015). Determination of robust optimum plot size and shape – a model-based approach. Biometrical Letters, 52, 13-22. https://doi.org/10.1515/bile-2015-0002 Reviewed. No data.

Pan, Chien-liang (1935). Uniformity Trials with Rice. Agronomy Journal, 27(4), 279–285. https://doi.org/10.2134/agronj1935.00021962002700040007x No data.

Panse, V. G. (1941). Studies in the technique of field experiments. V. Size and shape of blocks and arrangements of plots in cotton trials. The Indian Journal Of Agricultural Science, 11, 850-867 https://archive.org/details/in.ernet.dli.2015.271747/page/n955 agridat::panse.cotton.uniformity

Panse & Sukhatme (1954). Statistical Methods for Agricultural Workers. ICAR, New Delhi. Ch 7, p 141. https://archive.org/details/dli.scoerat.949statisticalmethodsforagriculturalworkers/page/138/mode/2up Same data as Panse (1941). agridat::panse.cotton.uniformity

Parker, E. R.; & L. D. Batchelor. (1932). Variation in the Yields of Fruit Trees in Relation to the Planning of Future Experiments. Hilgardia, 7(2), 81-161. Tables 3-9. https://doi.org/10.3733/hilg.v07n02p081 agridat::parker.orange.uniformity

Patel, J.B. (2004). Estimation of Optimum Plot Size for Field Experiment on Green Gram (Phaseolus rediatus L.) https://krishikosh.egranth.ac.in/handle/1/5810072537 Reviewed. No data.

Patel, Natverlal M. (1967). Plot technique in Bajri-Pennisetum typhoides. https://krishikosh.egranth.ac.in/handle/1/5810045227 Reviewed. No data.

Patel, Natverlal M. (1981). Plot size study in bidi tobacco (Nicotiana tabacum L.). Thesis. https://krishikosh.egranth.ac.in/handle/1/5810045267 Reviewed. No data.

Patil, N.M. (1995). Optimum plot size and shape, block size and shape and relative efficiency of designs for field experiments in cowpea (Vigna unguiculata). https://krishikosh.egranth.ac.in/handle/1/5810119241 Reviewed. No data.

Patil, S. L. and Narayana Reddy and P. Bhaskra Rao (2010). Experimental Plot Size and Shape Based on Data From a Uniformity Trial in Dryland Bengalgram (Cicer arietinum L.) during Winter Season in the Vertisols of Semi–Arid Tropics of South India. Indian J.Dryland Agric. Res. & Dev. 2010 25(1) : 102-105. https://www.indianjournals.com/ijor.aspx?target=ijor:ijdard&volume=25&issue=1&article=015 Reviewed. No data.

Paul, W.R.C. and M. Fernando (1939). Field-Plot Technique with Chillies. Tropical Agriculturist, 93, 270-275. https://archive.org/details/tropical-agriculturist_1939-11_93_5 Reviewed. No data.

Pearce, S. C.; & Jean M. S. Thom (1951). A Study of Plot-Size with Nigerian Estate Cacao. Journal of Horticultural Science, 26:4, 261-267. https://doi.org/10.1080/00221589.1951.11513739 Reviewed. No data.

Pearce, S.C. and Jean M. S. Thom. The Variability of Apple Trees (1951). Journal of Horticultural Science and Biotechnology, 26, 98-108. https://archive.org/details/journal-horticultural-science-biotechnology_1951_26
Reviewed. Used data by Batchelor.

Peiris, T. S. G.; and R. O. Thattil (1997). Alternative methods to determine plot sizes for three crops: A case study from coconut data. COCOS (1997), 12, 44-53 http://doi.org/10.4038/cocos.v12i0.2165 Reviewed. No data. References CRI (1985).

Peiris, T. U. S. and M. A. B. Ranatunga (2005). Use of Information on Positional Variation in Increasing Precision of Field Experiments in Tea. Sri Lanka Journ Tea Science 70, 10-17. http://dl.nsf.gov.lk/handle/1/19649 Reviewed. No data.

Pereira, C. P. (1972). TAMANHO DE PARCELA E NÚMERO NECESSÁRIO DE REPETIÇÕES EM EXPERIMENTOS DE PRODUÇÃO COM CACAUEIROS. C. P. Pereira. Comissão Executiva do Plano da Lavoura Cacaueira-Ceplac. Revista Theobroma, Brasil, 1972 v.02 n.4 out-dez, p3-7. Palavras-Chave: Desenho experimental, ensaios, coeficiente de variação https://repositorio-dspace.agricultura.gov.br/bitstream/1/1838/1/BR2019001237.pdf Reviewed. No data.

Pieris, W.V.D. and M.L.M. Salgado (1937). Experimental error in field experiments with coconuts. Tropical Agriculturist, 89, 75-85. https://archive.org/details/tropical-agriculturist_1937-08_89 Reviewed. No data.

Pimentel, Gomes; Couto, H.T.Z. (1985). O Tamanho Ótimo de Parcela Experimental Para Ensaios com Eucaliptos (The Optimum Experimental Plot Size for Essays with Eucalipt). Revista do IPEF, Pirarcicaba, 31, 75. https://doi.org/10.1590/S0100-67622003000500009 Reviewed. No data.

Plaisted, Robert LeRoy (1954). Field plot techniques for estimating onion yields. Master’s Thesis, Iowa State University. https://doi.org/10.31274/rtd-20200617-42 Reviewed. No data.

Pointer, John Pate and E. James Koch (1961). Estimates of Optimum Plot Size from Uniformity Data in Maryland Tobacco. Tobacco Science, 5-27, p. 112-117. Reviewed. No data.

Polson, David (1964). Estimation of Optimum Size, Shape, and Replicate Number of Safflower Plots for Yield Trials. Utah State University, All Graduate Theses and Dissertations, 2979. Table 6. https://digitalcommons.usu.edu/etd/2979/ agridat::polson.safflower.uniformity

Potter, George. Field Plot Technique for Tree Crops. Proceedings of the American Society for Horticultural Science v.62 https://babel.hathitrust.org/cgi/pt?id=osu.32435028190270&seq=34&q1=plot+technique Reviewed. No data.

Poultney, R., Riley, J., & Webster, R. (1997). Optimizing plot size and shape for field experiments on terraces. Experimental Agriculture, 33(01), 51–64. doi:10.1017/s0014479797000161 Reviewed. No data. Heatmaps of 5 terraces.

Prabhakaran, P.V. (1974). Optimum plot size for field experiments with tapioca. Agricultural Research Journal of Kerala, 12(1), 19-23. https://krishikosh.egranth.ac.in/handle/1/5810114240 Reviewed. No data.

Prajapati Rameshbhai, I. (2005). Optimum size and shape of plot for field experiments on potato. Thesis. https://krishikosh.egranth.ac.in/handle/1/5810115905 Reviewed. No data.

Prabhakaran, P.V. (1978). Optimum plot size for field trials with banana. Agricultural Research Journal of Kerala, 16(1), 33-38. https://krishikosh.egranth.ac.in/handle/1/5810115813 Reviewed. No data.

Rakhi, T. and Arya V. Chandran, Vijayaraghava Kumar and Brigit Joseph. Estimation of Optimum Plot Size and Shape for Branching Variety of Cassava (Manihot esculenta Crantz) Using Statistical Methods. Journal of Root Crops, 2020, Vol. 46 No. 1, pp. 58-62 https://journal.isrc.in/index.php/jrc/article/view/575/408 Reviewed. No data.

Ramani, C.V. (1995). Plot technique in Lucern. https://krishikosh.egranth.ac.in/handle/1/5810046435 Reviewed. No data.

Rampton H. H. and Roger G. Petersen. Relative efficiency of plot sizes and numbers of replications as indicated by yields of orchardgrass seed in a uniformity test. https://doi.org/10.2134/agronj1962.00021962005400030019x Reviewed. No data.

Reddy, M. N., and C. K. Ramanatha Chetty (1982). Effect of Plot Shape on Variability in Smith’s Variance Law. Experimental Agriculture, 18, 333-338. https://doi.org/10.1017/S0014479700000752 Reviewed. No data.

Reddy, M. Narayana; C. K. Ramanatha Chetty. (1985). Experimental plot size and shape based on data from a uniformity trial with dryland pigeonpea. Indian J. Agric. Sci. Vol 55, Num 8, pp 538-543 Not found.

Reddy, S.B.S. (1992). Uniformity trial on groundnut. https://krishikosh.egranth.ac.in/handle/1/5810000021 No data for the uniformity trial? Small dataset on page 96, 20 plots with 5 plants/plot. Branches/plant, leaves/plant, height of the plant.

Reji. (1995). Optimum plot size for intercropping experiments. Thesis, Kerala Agricultural University.

Reynolds, D.T. and D.T. Killough and J.T. Vantine (1934). Size, shape, and replication of plats for field experiments with cotton. Agronomy Journal, 26, 725-734. https://doi.org/10.2134/agronj1934.00021962002600090003x Reviewed. No data.

Richter, C., & Kroschewski, B. (2012). Geostatistical Models in Agricultural Field Experiments: Investigations Based on Uniformity Trials. Agronomy Journal, 104(1), 91–105. https://doi.org/10.2134/agronj2011.0100 Reviewed. No data. Trials were conducted 1954-1958.

Robinson, H.F.; and J.A.Rigney and P.H.Harvey (1948). Investigations In Peanut Plot Technique With Peanuts. Agricultural Experiment Station, North Carolina State College. agridat::robinson.peanut.uniformity

Roemer, T. (1920). Der Feldversuch. Arbeiten der Deutschen Landwirtschafts-Gesellschaft, 302. https://www.google.com/books/edition/Arbeiten_der_Deutschen_Landwirtschafts_G/7zBSAQAAMAAJ Reviewed. Several datasets added to agridat. agridat::roemer.sugarbeet.uniformity

Rossettii, A.G.; Pimentel Gomes, F. (1983). Determinação do Tamanho Otimo de Parcelas em Ensaios Agricolas (Determination of the Optimum Plot Size in Agricultural Essays). Pesq. agropec. bras., Brasilia, 18(5), 477. https://repositorio.usp.br/item/000724650 Reviewed. No data. In Spanish.

Rossetti, A.G.; Gomes, F.P. (1987). A method for the determination of optimum plot size in experiments with rubber trees (Hevea). J Nat Rubb Res (1987) 2(3):135-141 http://agris.upm.edu.my:8080/dspace/handle/0/15652 Reviewed. No data.

Rothamsted Experimental Station (1927). Report 1925-1926 with the Supplement to the Guide to the Experimental Plots. Lawes Agricultural Trust, p. 154-155. http://www.era.rothamsted.ac.uk/eradoc/book/84 agridat::sawyer.wheat.uniformity

Sagisi, Fancisca D.; Mariano B. de Ramos. Field Plot and Sampling Techniques on Virginia Tobacco. No data for the uniformity trial part of this report.

Salem, Manal M. and Somaia A. Barakat (2004). Estimation of optimum plot size, number of replications and number of sampling units for Faba bean yield trails. J. Agric. Sci. Mansoura Univ., 29, 4375-4390. Reviewed. No data.

Samita, S.; R. O. Thattil Katulanda; N. E. M. Jayasekara. (1991). Optimum plot size for rubber (Hevea brasiliensis). Tropical Agricultural Research, 3, 348-354. Reviewed. No data.

Sanders, H. G. (1930). A note on the value of uniformity trials for subsequent experiments. The Journal of Agricultural Science, 20(01), 63. https://doi.org/10.1017/s0021859600088626 Reviewed. No data. Used data from Aarslev, Denmark.

Sands, Daniel E. (1954). A Determination of Optimum Plot Size for Estimating Mean Number of Bolls. USDA. https://www.nass.usda.gov/Education_and_Outreach/Reports,_Presentations_and_Conferences/Yield_Reports/A%20Determination%20of%20Optimum%20Plot%20Size%20for%20Estimating%20Mean%20Number%20of%20Bolls.pdf Reviewed. No data.

Sapěhin, A. A. (1927). Beiträge zur Methodik des Feldversuches. Die Landwirtschaflichen Versuchsstationen, 105, 243-259. https://www.google.com/books/edition/Die_Landwirthschaftlichen_Versuchs_Stati/cLZGAAAAYAAJ?hl=en&pg=PA243 agridat::jurowski.wheat.uniformity

Sari, Bruno Giacomini; Alessandro Dal’Col Lucio. (2018). Uniformity trials size for estimating cherry tomato plot size. Revista Ciência Agronômica, v. 49, n. 4, p. 653-662, out-dez, 2018 http://ccarevista.ufc.br/seer/index.php/ccarevista/article/view/4462 Reviewed. No data.

Saste, Sandhya V. and S. L. Sananse. (2015). Soil Heterogeneity to Determine Size and Shape of Plots: A Review International Journal of Advanced Scientific and Technical Research Issue 5 volume 6, September-October 2015 Reviewed. No data.

Sayer, Wynne; M. Vaidyanathan and S. Subrammonia Iyer (1936). Ideal size and shape of sugar-cane experimental plots based upon tonnage experiments with Co 205 and Co 213 conducted in Pusa. Indian J. Agric. Sci., 1936, 6, 684-714. Appendex, page 712. https://archive.org/details/in.ernet.dli.2015.271737 agridat::sayer.sugarcane.uniformity

Sayer, Wynne; and Krishna Iyer. (1936). On some of the factors that influence the error of field experiments with special reference to sugar cane. Indian J. Agric. Sci., 1936, 6, 917-929. Appendix, page 927. https://archive.org/details/in.ernet.dli.2015.271737 agridat::sayer.sugarcane.uniformity

Schmildt, Edilson Romais; Adriel Lima Nascimento; Alan de Lima Nascimento; et al. Optimum plot size for experiments with papaya genotypes in field. African Journal of Agricultural Research, 13, 360-365. https://doi.org/10.5897/AJAR2017.12951 Reviewed. No data. Optimum plot size if four plants by plot, using four replications.

Schneidewind, W. Mitwirkung von Dr. D. Meyer und Dr. F. Münter. (1919) Parzellengrößenversuche, Untersuchungen über die Brauchbarkeit verschieden großer und verschieden angelegter Parzellen bei Düngungsversuchen und die Wahrscheinlichkeitsrechnung. Arbeiten der Deutschen Landwirtschafts-Gesellschaft. Heft 296. 1-51. https://babel.hathitrust.org/cgi/pt?id=chi.105133922&seq=1201 Reviewed. No data.

Schwertner, Diogo Vanderlei and Alessandro Dal’Col Lúcio, Alberto Cargnelutti Filho. (2015). Uniformity trial size in estimates of plot size in restrict areas. Revista Ciência Agronômica, v. 46, n. 3, p. 597-606. Reviewed. No data.

Schwertner, Diogo Vanderlei ; Alessandro Dal’Col Lúcio, Alberto Cargnelutti Filho. (2015). Size of uniformity trials for estimating the optimum plot size for vegetables. Horticultura Brasileira 33(3):388-393. http://dx.doi.org/10.1590/S0102-053620150000300019 Reviewed. No data.

Shaboon, Sh. and Fateh, H. and Fares, W. (2013). Utlization of uniformity trials to estimate the optimum plot size and shape and the number of replications in maize yield trials. Egyptian Journal of Agricultural Sciences, 64, 379-388. http://dx.doi.org/10.21608/ejarc.2013.214342. Reviewed. No data.

Shafi, Sameera (2007). On Some Aspects of Plot Techniques in Field Experiments on Tomato (Lycopersicon esculentum mill.) in Soils of Kashmir. Thesis. Univ. of Ag. Sciences & Technology of Kashmir. Table 2.2.1. https://krishikosh.egranth.ac.in/handle/1/5810083035 agridat::shafi.tomato.uniformity

Shafi, Sameera; S.A.Mir, Nageena Nazir, and Anjum Rashid. (2010). Optimum plot size for tomato by using S-PLUS and R-software’s in the soils of Kashmir. Asian J. Soil Sci., 4, 311-314. https://www.researchjournal.co.in/upload/assignments/4_311-314.pdf agridat::shafi.tomato.uniformity

Shah, Syed Asghar Ali; Murtaza Khan Alamgir (2016). Size, Shape and No. of Replication of Plot in Relation to Field Experiment with Wheat Variety PIRSABAK-2004. Food Science and Quality Management, 50. Reviewed. No data.

Sharma, Anju (1992). Determination of optimum plot size estimation of of tomato (Lycopersicon esculentum Mill.) yield in Saproon Valley of Solan District (H.P.). https://krishikosh.egranth.ac.in/handle/1/5810067799 Reviewed. No data.

Sharpe, R. H., and G. H. Blackmon, 1950 A Study of Plot Size and Experimental Design with Pecan Yield Data. Am. Soc. Hort. Sci. Pro. 56:236-241. Reviewed. No data.

Sheela, M A (1987). Optimum size of plots in cocoa (Theobroma cacoa L.) a multivariate case. Department of Statistics, College of Veterinary and Animal Sciences, Mannuthy https://krishikosh.egranth.ac.in/handle/1/5810142527 Reviewed. No data.

Shen (1930) Field technique for determining comparative yields in wheat under different environmental conditions in China. Journal of American Society of Agronomy, 22, 193-215. No data.

Shen, Li-Ying (1934) Statistical analysis of a blank test of rice with suggestions for field technique. Agriculture Sinica, 1, 107-138. https://upload.wikimedia.org/wikipedia/commons/9/96/NLC416-16jh004002-107129_%E6%B0%B4%E7%A8%BB%E8%A9%A6%E9%A9%97%E4%B9%8B%E7%B5%B1%E8%A8%88%E5%88%86%E6%9E%90.pdf No data. Only a little bit of data shown on page 109.

Shitap, Shri M.S. (2011). Plot technique in Brinjal (Solanum melongena L.) https://krishikosh.egranth.ac.in/handle/1/5810010600 Reviewed. No data. The table of contents suggests that the data appears in the appendix, but the pages are blank.

Shitap, M. S. and V. B. Darji (2014). On optimum plot size and shape for field experimentation on brinjal (Solanum melongena L.) under middle Gujarat condition. International Research Journal of Agricultural Economics and Statistics, 5, 158-152. https://doi.org/10.15740/HAS/IRJAES/5.2/148-152 Reviewed. No data.

Shukla, A. K., and Subhash K. Yadav, and Govind Ch. Misra (2013). A linear model for uniformity trial experiments. Statistics in Transition, 14, 161-170. http://cejsh.icm.edu.pl/cejsh/element/bwmeta1.element.desklight-3d53acd5-91b2-41b1-a908-01a58b0fce65 Reviewed. No data. (Appeared to use data from Haque, but only summary statistics, not raw data).

Shukla, Alok Kumar (2011). Some contributions in estimation of asymptotic regression statistical models. Dissertation, Chhatrapati Sahuji Maharaj University. http://hdl.handle.net/10603/228329 Reviewed. No data.

Siao, Fu. A field plot technic study with cotton. Found in: Harry H. Love papers, 1907-1964. Box 3, folder 34, Cotton - Plot Technic Study 1930-1932. https://rmc.library.cornell.edu/EAD/htmldocs/RMA00890.html This is the same experiments as in Siao (1935). agridat::siao.cotton.uniformity

Siao, Fu (1935). Uniformity trials with cotton. J. Amer. Soc. Agron., 27, 974-979. https://doi.org/10.2134/agronj1935.00021962002700120004x Reviewed. No data in the paper. Data were found in the personal papers of Harry Love.

Sills, G. R., & Nienhuis, J. (1993). Field Plot Technique Affects Snap Bean Yield Evaluation. Journal of the American Society for Horticultural Science, 118(5), 672-674. https://doi.org/10.21273/JASHS.118.5.672 Reviewed. No data.

Silva, Mauricio dos Santos da, et al. (2019) “Optimal size of experimental plots of papaya trees using a modified maximum curvature method.” Ciência Rural 49 (2019). https://www.scielo.br/j/cr/a/CYZsbJzSD6SWpYB9X3WscqF/?lang=en Reviewed. No data.

Singh, R. P. Uniformity Trial on Cauliflower (Brasstca Oleracea Var. Botrytis). Indian Journal of Horticulture, 42, 96-100. https://www.indianjournals.com/ijor.aspx?target=ijor:ijh&volume=42&issue=1and2&article=021 No data.

Smith, Francis L. (1958). Effects of plot size, plot shape, and number of replications on the efficacy of bean yield trials. Hilgardia, 28, 43-63. https://doi.org/10.3733/hilg.v28n02p043 agridat::smith.beans.uniformity

Smith, H. Fairfield (1938). An empirical law describing heterogeneity in the yields of agricultural crops. The Journal of Agricultural Science, volume 28, Issue 1, January 1938, pp. 1 - 23. https://doi.org/10.1017/S0021859600050516 agridat::smith.wheat.uniformity

Smith, Louis H. 1910. Plot arrangement for variety experiments with corn. Agronomy Journal, 1, 84–89. Table 1. https://books.google.com/books?id=mQT0AAAAMAAJ&pg=PA84 agridat::smith.corn.uniformity

Sokhal, Urmil (1982). College on The Efficiency of Designs for Bajra in Relation to Shape and size of Plot And Block. https://krishikosh.egranth.ac.in/handle/1/5810055172 Reviewed. No data.

Soplin, H., H. D. Gross, and J. O. Rawlings. (1975). Optimum Size of Sampling Unit to Estimate Coastal Bermudagrass Yield”. Agronomy Journal 67.4 (1975): 533-537. https://doi.org/10.2134/agronj1975.00021962006700040020x Reviewed. No data.

Squibbs, F. I. (). Uniformity trial on Established Cocoa. Half-Yearly Progress Report - Cocoa Research Institute of Nigeria 1938-1942, p. 6. https://archive.org/details/half-yearly-progress-report-cocoa-research-institute-ng_1938-1942_unset Reviewed. No data.

Stadler, Lewis John. (1921). Experiments in field plot technic for the preliminary determination of comparative yields in the small grains. University Of Missouri. https://hdl.handle.net/2027/umn.319510008017444 Reviewed. No data. Uniformity trial discussed on page 43.

Stadler, L. J. (1926). Experimental Error in Field Plot Tests. Proceedings of the International Congress of Plant Sciences, Vol 1, 107-127. https://babel.hathitrust.org/cgi/pt?id=mdp.39015069524372&seq=197 Reviewed. No original data. Used datasets similar to Roemer (1920). Page 110 summarizes blank experiments that had more than 100 plots.

Stephens, Joseph C. (1928). Experimental methods and the probable error in field experiments with sorghum. Journal of Agricultural Research, 37, 629–646. https://naldc.nal.usda.gov/catalog/IND43967516 agridat::stephens.sorghum.uniformity

Stickler, F. C. (1960). Estimates of Optimum Plot Size from Grain Sorghum Uniformity Trial Data. Technical bulletin, Kansas Agricultural Experiment Station. Page 17-20. https://babel.hathitrust.org/cgi/pt?id=uiug.30112019584322&view=1up&seq=21 agridat::stickler.sorghum.uniformity

Stockberger, W. W. (1912). A Study of Individual Performance in Hops. Journal of Heredity, 1, 452-457. https://doi.org/10.1093/jhered/os-8.1.452 Reviewed. No data.

Stockem, J.E., Korontzis, G., Wilson, S.E. et al. (2021) Optimal Plot Dimensions for Performance Testing of Hybrid Potato in the Field. Potato Research, 65, 417–434. https://doi.org/10.1007/s11540-021-09526-9 Reviewed. No data.

Storck, Lindolfo (2010). Partial collection of data on potato yield for experimental planning. Field Crops Research, 121, 286-290. https://doi.org/10.1016/j.fcr.2010.12.018. Reviewed. No data.

Storck, Lindolfo; Sidinei Lopes; Alessandro Dal’Col Lúcio; Alberto ​Cargnelutti Filho (2011). Optimum plot size and number of replications related to selective precision. Ciência Rural 41(3):390-396. https://doi.org/10.1590/S0103-84782011000300005 https://www.researchgate.net/publication/270761907_Optimum_plot_size_and_number_of_replications_related_to_selective_precision No data

Strickland, A. G. (1932). A vine uniformity trial. Journal of Agriculture, Victoria, 30, 584-593.

Strickland, A. G. (1935). Error in horticultural experiments. Journal of Agriculture, Victoria, 33, 408-416. agridat::strickland.apple.uniformity agridat::strickland.grape.uniformity agridat::strickland.peach.uniformity agridat::strickland.tomato.uniformity

Strydom, G. J. (1966). Studies on the planning of field experiments with vegetable crops. S. Afr. J. Agric. Science 9, 183-194. https://hdl.handle.net/10520/AJA05858860_582 Reviewed. No data.

Summerby, R. (1923). Replication in relation to accuracy in comparative crop tests. J. Am Soc Agron, 15. https://www.google.com/books/edition/Proceedings_of_the_American_Society_of_A/MWU4AQAAMAAJ Also: https://doi.org/10.2134/agronj1923.00021962001500050004x Reviewed. No data. Data sent to Rothamsted in 1938. Two areas of land, 100 links by 505 links. One area was Alaska Oats. Another area was Huron wheat. fixme check if I can find this in the Rothamsted papers.

Summerby, R. (1925). A Study of Sizes of Plats, Number of Replications, and the Frequency and Methods of Using Check Plots in Relation to Accuracy in Field Experiments. Jour. Amer. Soc, Agron. 17: 140-149. Reviewed. Data is not very uniform. data-unused/summerby.oat.uniformity

Summerby, R. (1934). The value of preliminary uniformity trials in increasing the precision of field experiments. Macdonald College. https://books.google.com/books?id=6zlMAAAAYAAJ&pg=RA14-PA47 Reviewed. Has data for 5x35 and 1x35 grid layouts. agridat::summerby.multi.uniformity.

Swallow, William H.; Todd C. Wehner (1986). Optimum Plot Size Determination and Its Application to Cucumber Yield Trials. Euphytica, 35, 421-432. https://doi.org/10.1007/BF00021850 Reviewed. No data. For multiple-harvest yield trials, optimum plot sizes were estimated to be 6.4 to 10.3 m^2.

Swanson, A.F. (1930). Variability of Grain Sorghum Yields as Influenced by Size, Shape, and Number of Plats. Agron. J., 22: 833-838. https://doi.org/10.2134/agronj1930.00021962002200100002x Reviewed. No data.

Swearingin, M.L. and Holt, D.A. (1976). Using a “Blank” trial as a teaching tool. Journal of Agronomic Education, 5: 3-8. https://doi.org/10.2134/jae.1976.0003 Data from 9 trials. Each trial was RCBD with 4 ‘varieties’ and 4 reps. Not clear if the layout was in rows and columns or randomized.

Taha, R.S. and M.M. Shafik (2000). Relative precision of some incomplete block designs for soybean uniformity trials and optimum sample size. J. Agric. Sci. Mansoura Univ, 25, 5601-5610. Reviewed. No data.

Tartaglia, FdL, Lúcio, A, Diel, MI, et al. Experimental Plan For Tests With Pea. Agronomy Journal. 2021; 113: 1394–1406. https://doi.org/10.1002/agj2.20575 Reviewed. No data.

Taylor, F.W. (1907-1909). The size of the experimental plot for field crops. Proceedings annual Society of agronomy 1, 56-58. https://acsess.onlinelibrary.wiley.com/doi/10.2134/agronj1907-1909.00021962000100010014x Reviewed. No data.

Taylor, Howard Lewis (1951). The effect of plot shape on experimental error. Master’s Thesis, Iowa State University. Reviewed. No digital copy available. No data given. Used data from a corn uniformity trial, oats uniformity, and the data of Fairfield Smith. Smaller experimental errors were found for long narrow plots.

Tedin, Olof (1931). The Influence of Systematic Plot Arrangement upon the Estimate of Error in field Experiments. J. Agric. Science, 21, 191-208. https://doi.org/10.1017/S0021859600008613 Reviewed. No data. Uses uniformity trials from other papers.

Thomas, H.L. and Abou-El-Fittouh, H.A. (1968) Optimum Plot Size and Number of Replications for Estimating Forage Yield and Moisture Percentage. Agron. J., 60: 549-550. https://doi.org/10.2134/agronj1968.00021962006000050031x Reviewed. No data.

Thompson, Ross C. (1934). Size, Shape, and Orientation of Plots and Number of Replications Required in Sweetpotato Field-Plot Experiments. J. Agric. Rsch., 5, 379-399. https://naldc.nal.usda.gov/catalog/IND43968506 Reviewed. No data. Interesting paper because the experiment was conducted on 4 plots of year/loc combinations.

Toebe, Marcos, et al. (2020). Plot size and number of replications for ryegrass experiments. Ciência Rural 50.1. https://doi.org/10.1590/0103-8478cr20190195 Reviewed. No data.

Toebe, Marcos, et. al. (2022). Plot size and number of replicates for ryegrass experiments sowed in rows. Pesquisa Agropecuária Brasileira, v.57, e02976, 2022. DOI: https://doi.org/10.1590/S1678-3921.pab2022.v57.02976. Reviewed. No data.

Torrie, J.H., Schmidt, D.R. and Tenpas, G.H. (1963). Estimates of Optimum Plot Size and Shape and Replicate Number for Forage Yield of Alfalfa-Bromegrass Mixtures. Agron. Journal, 55: 258-260. https://doi.org/10.2134/agronj1963.00021962005500030015x

Tulaikow, N. (1913) Resultate einer mathematischen Bearbeitung von Ernteergebnissen. Russian Journal fur Exp Landw., 14, 88-113. In Russian with German summary. Two uniformity trials with winter and summer wheat. agridat::tulaikow.wheat.uniformity

Vageler, H. (1919) Beziehung zwischen Parzellengrösse und Fehler der Einzelbeobachtung bei Felderversuchen (Relation between size of plats and error in detached observations in field experiments). Journal für Landwirtschaft, 67, 97-108. https://www.google.com/books/edition/Journal_f%C3%BCr_Landwirtschaft/JHAZAQAAIAAJ?hl=en&gbpv=1&dq=Vageler+Beziehung+zwischen+parzellengr%C3%B6sse&pg=PA107&printsec=frontcover Has 128 plots for roggen (rye) hafer (oats) kartoffeln (potatoes) wruken (rape/rutabega/kohlrabi?) The layout seems to be a single long set of plots.

Vagholkar, B. P. ; Apte, V. N. ; Iyer, S. S. (1940). A study on plot size and shape technique for field experiments on sugarcane. Indian Journal of Agricultural Science 1940 Vol.10 pp.388-403 https://archive.org/details/in.ernet.dli.2015.25316/page/n437/mode/2up Reviewed. No data.

Vaidyanathan, M. (1934). The method of covariance applicable to the utilization of the previous crop records for judging the improved precision of experiments. Ind. J. Agric. Sci., 4, 327-42. https://archive.org/details/indian-journal-of-agricultural-sciences_1934-1935_4/page/326/ Has data for 24 plots, but spatial layout is not clear. Not used.

Vallejo, R.L. & H. A. Mendoza (1988). Determination of optimum plot size and adequate number of replications to evaluate potato seedling populations. VIIth Symposium of the International Society for Tropical Root Crops, Gosier (Guadeloupe), 1-6 July 1985, Ed. INRA, Paris, 1988. http://www.istrc.org/images/Documents/Symposiums/Seventh/7th_symposium_proceedings_0081.pdf Reviewed. No data.

Vallejo, Roger L.; VHumberto A. Mendoza. (1992). Plot Technique Studies on Sweetpotato Yield Trials. J. AMER. Soc. HORT. SCI. 117(3):508-511. https://doi.org/10.21273/JASHS.117.3.508 Reviewed. No data.

Vargas-Rojas, Jorge Claudio. (2020). Size and shape of the experimental unit in yield trials of Brachiaria, hybrid CIAT 3608. https://www.semanticscholar.org/paper/Size-and-shape-of-the-experimental-unit-in-yield-of-Vargas-Rojas/e9964eca6ac42471aa44bc45e84bc376b02daf09 Vishnaadevi, S.; K. Prabakaran, E. Subramanian, P. Arunachalam. (2019). Determination of fertility gradient direction and optimum plot shape of paddy crop in Madurai District. Green Farming, 10, 155-159. https://www.researchgate.net/publication/333892867 agridat::vishnaadevi.rice.uniformity

Warren, J.A. and Mendez, I. (1981). Block Size and Orientation, and Allowance for Positional Effects, in Field Experiments. Experimental Agriculture, 17, 17 - 24. https://doi.org/10.1017/S0014479700011182 Reviewed. Used a dozen existing datasets.

Wassom and R.R. Kalton. (1953). Estimations of Optimum Plot Size Using Data from Bromegrass Uniformity Trials. Agricultural Experiment Station, Iowa State College, Bulletin 396, page 314-319. https://lib.dr.iastate.edu/ag_researchbulletins/32/ https://babel.hathitrust.org/cgi/pt?id=uiug.30112019570701&view=1up&seq=26&skin=2021 agridat::wassom.brome.uniformity

Webster, C. 1939. A note on a uniformity trial with oil palms. Tropical Agriculture, 16, 15-19. No data according to Mendez.

Westover, Kyle C. (1924). The influence of plot size and replication on experimental error in field trials with potatoes. Agricultural Experiment Station, West Virginia University, No. 189. https://babel.hathitrust.org/cgi/pt?id=uiug.30112019921359&view=1up&seq=1 https://www.google.com/books/edition/The_Influence_of_Plot_Size_and_Replicati/Px6K44dYd1QC Reviewed. No data.

Wiebe, G.A. 1935. Variation and Correlation in Grain Yield among 1,500 Wheat Nursery Plots. Journal of Agricultural Research, 50, 331-357. https://naldc.nal.usda.gov/download/IND43968632/PDF agridat::wiebe.wheat.uniformity

Wiedemann, Alfred Max. 1962. Estimation of Optimum Plot Size and Shape for Use in Safflower Yield Trails. Table 5. All Graduate Theses and Dissertations. Paper 3600. Table 5. https://digitalcommons.usu.edu/etd/3600/ agridat::wiedemann.safflower.uniformity

Wiedemann, A.M. and Leininger, L.N. (1963), Estimation of Optimum Plot Size and Shape for Safflower Yield Trials. Agron. J., 55: 222-225. https://doi.org/10.2134/agronj1963.00021962005500030004x Reviewed. See Wiedemann thesis for data. agridat::wiedemann.safflower.uniformity

Wilcox, A.N. (1927). A study of field plot technique with strawberries. Scientific Agriculture, 8, 171-174. Reviewed. No data. https://archive.org/details/canadian-journal-of-animal-science_1927-11_8_3/page/174/mode/2up

Williams, ER and Luckett, DJ. (1988). The use of uniformity data in the design and analysis of cotton and barley variety trials. Australian Journal of Agricultural Research, 39, 339-350. https://doi.org/10.1071/AR9880339 agridat::williams.barley.uniformity agridat::williams.cotton.uniformity

Wilson, C. E. Study of the plots laid out on field II with a view to obtaining plot-fertility data for use in future experiments on these plots, season 1940-41. Dissertation: The University of the West Indies. Page 36-39. https://uwispace.sta.uwi.edu/dspace/handle/2139/43658 See also the dissertation by Bradley. agridat::bardley.multi.uniformity

Wilson, Wendell W. (1970). Texas Vegetable Remote Sensing Study, 1969 Determination of Optimum Plot Size and Shape for Estimation of Carrot Yield. Research and Development Branch Standards and Research Division Statistical Reporting Service. https://www.nass.usda.gov/Education_and_Outreach/Reports,_Presentations_and_Conferences/Yield_Reports/Texas%20Vegetable%20Remote%20Sensing%20Study%201969.pdf No data found.

Wood, T. B. and F. J. M. Stratton. (1910). The interpretation of experimental results. J. Agric Sci 3, 417-440. Reviewed. No data. Several plots of the distribution of data.

Wood, Ronald A. (1972). Optimum Plot size for winter wheat. Research & Development Branch, Standards and Research Division Statistical Reporting Service. https://naldc.nal.usda.gov/catalog/27961 Reviewed. No data.

Wyatt, F. A. (1927). Variation in plot yields due to soil heterogeneity. Scientific Agriculture, 7, 248-256. Table 1. https://doi.org/10.4141/sa-1927-0020 agridat::wyatt.multi.uniformity

Yadav, Raj Pal. 1991. Spatial Correlation Analysis of Uniformity Trial Data. College of Basic Sciences and Humanities Chaudhary Charan Singh Haryana Agricultural University Hisar. https://krishikosh.egranth.ac.in/handle/1/5810076755 Reviewed. No data.

ZAŁĘSKI, Edmund (1925). Metodyka doświadczeń rolniczych. (Methodology of agricultural experiments). Rozprawy Biologiczne z Zakresu Medycyny Weterynaryjnej, Rolnictwa i Hodowli, T. 3, 1925, z. 4. 209-281. https://archive.org/details/jbc.bj.uj.edu.pl.NDIGCZAS093090_1925_004/page/209/ Reviewed. No obvious uniformity trial data. AI summary: Edmund Załęski’s work, including his book “Metodyka doświadczeń rolniczych” (Methodology of agricultural experiments) and his focus on applying probability theory to agricultural experimentation, highlights the historical importance of systematic and well-designed trials in agricultural research, including the foundational role of understanding field variability through techniques like uniformity trials.

Zandonadi, Cecília Uliana and Viçosi, David Brunelli and Fornazier, Maurício Lorenção and Botacim, Luciana Aparecida and Sousa, Douglas Gonzaga de and Martinuzzo, Marx Bussular and Alixandre, Fabiano Tristão and Favarato, Luiz Fernando and Krohling, Cesar Abel and Guarçoni, Rogério Carvalho and Alixandre, Ricardo Dias and Fornazier, Maurício José (2022). Determining the minimum size of experimental plot for evaluating field parameters for Arabica coffee Research, Society and Development, 11, 1-9. http://dx.doi.org/10.33448/rsd-v11i6.29384 Reviewed. No data.

Zhang, R and A. W. Warrick, and D. E. Myers (1994). Heterogeneity, plot shape effect and optimum plot size. Geoderma, 62, 183-197. https://doi.org/10.1016/0016-7061(94)90035-3 Reviewed. No data. Oddly, they appear to use data from Kuehl & Kittock, but there is no data in that paper.

Zuber (1942). Relative Efficiency of Incomplete Block Designs Using Corn Uniformity Trial Data. Agron Journal, 34, 30-47. https://doi.org/10.2134/agronj1942.00021962003400010004x Reviewed. Limited data, 3 reps of 4x5.

Zuhlke, Thomas A. and Gritton, E.T. (1969). Optimum Plot Size and Shape Estimates for Pea Yield Trials. Agron. J., 61: 905-908. https://doi.org/10.2134/agronj1969.00021962006100060023x Reviewed. No data. This paper is based on his thesis at W Wisconsin.

Zuhlke, Thomas A. and Gritton, E.T. (1970). Relative Precision of Different Experimental Designs and Number of Replications in Pea Yield Trials. Agron J., 62, 61-64. https://doi.org/10.2134/agronj1970.00021962006200010020x Reviewed. No data.

# Roemer (1920)

Note: Neyman (1935) says, “I used all data on uniformity trials published by T. Roemer (”Der Feldversuch, Berlin, 1920), which were suitable for the purpose, having many rows and columns.

Cochran says about Roemer:

Sugarbeet: 96 plots in 1916 and 1918 - table 1 & 3 Sugarbeet: 416 plots - table 4 Millet 105 plots (also in Lehman) - table 13 Oats: 240 plots 8x30 - table 10 Ragi: 34 plots <—- fixme. I think this is the rice data with 34 plots. Timothy: 240 plots (also in Holtsmark) - table 11 Summer wheat: 16x15=240 plots. Tulaikow Russian Journ Exp Agric, 14. (1913) - table 9 Winter wheat: 10x25=230 plots Tulaikow Russian Journ Exp Agric, 14. (1913) - table 8

Roemer (1920). Der Feldversuch. Arbeiten der Deutschen Landwirtschafts-Gesellschaft, 302. https://www.google.com/books/edition/Arbeiten_der_Deutschen_Landwirtschafts_G/7zBSAQAAMAAJ

Tab | Orig qm | Mu | Wt | unit | note
--- | --- | --- | --- | --- | ---
1 | 6.8 | 21.7 | kg |  | agridat::roemer.sugarbeet.uniformity (1916)
2 | 6.8 |  | kg |  | 1917 2x48=96 plots
3 | 6.8 | 23.5 | kg |  | agridat::roemer.sugarbeet.uniformity (1918)
4 | 136.5 | 617 | pf | 1.33 x 22.5 | agridat::haritonenko.sugarbeet.uniformity
5 | 20.2 | 329 | lb | 1/10 acre | Same as agridat::mercer.mangold.uniformity
6 | 8.1 | 395 | lb | 1/10 acre | Same as agridat::mercer.wheat.uniformity
7 | 2.8 | 681 | g |  | Same as agridat::montgomery.wheat.uniformity 1909, 14x16
8 | 4.6 | 700 | g | qm | agridat::tulaikow.wheat.uniformity (winter)
9 | 4.6 | 532 | g | qm | agridat::tulaikow.wheat.uniformity (summer)
10 | 4.6 | 203 | kg | qm | agridat::jegorow.oats.uniformity
11 | 6.3 | 17.8 | kg | 25 qm | Same as agridat::holtsmark.timothy.uniformity (orig 5m x 5m)
12 | 404.7 | 286 | lb | 20.2 qm | Same as agridat::lehmann.rice.uniformity 17x2 4 years
13 | 404.7 | 167 | lb | 20.2 qm | Same as agridat::lehmann.millet.uniformity (only 20 rows instead of 22)

Note, based on the note for Larsen (240 plot * 25 sq m = 6000 sq m / 60 a = 100 sq m per “a” it appears that “a” is “are = 100m^2”)

Page 27

1-3. Eigene Versuche mit Zuckerrüben, ausgeführt auf dem Neßthaler Zuchtfeld des Kaiser-Wilhelm-Institutes, Bromberg, in den Jahren 1916, 1917 und 1918. 1916 und 1918 war die Versuchsfläche ein und dieselbe, 6,80 a groß und in den beiden Jahren mit Original Klein-Wanzlebener Zuckerrüben auf 30 X 40 cm bebaut. Vorfrucht für 1916 war Hafer, für 1918 Roggen; 1917 war eine andere Fläche, ebenfalls 6,80 a groß, für den Versuch benußt; gesät wurden zwei verschiedene Zuchten von Strube, Schlanstedt. Beide Flächen sind von sehr gleichmäßiger Bodenbeschaffenheit. Bei der Fläche 1916 und 1918 machte sich im ersten Jahre bei den Reihen 31-33 eine geringe Stelle bemerkbar, die 1918 weit weniger in Erscheinung trat. Die Bodenunterschiede sind in allen drei Jahren geringer als die durch die Versuchstechnik bedingten Fehler.

Translated: Own (Roemer) experiments with sugar beets, carried out on the Neßthal breeding field of the Kaiser Wilhelm Institute, Bromberg, in the years 1916, 1917 and 1918. In 1916 and 1918 the test area was one and the same, 6.80 are large and with original in both years Klein-Wanzleben sugar beets cultivated on 30 x 40 cm. The previous crop for 1916 was oats, for 1918 it was rye; In 1917 another area, also 6.80 a large, was used for the experiment; Two different varieties from Strube, Schlanstedt were sown. Both areas have very uniform soil conditions. In the 1916 and 1918 area, a small spot was noticeable in rows 31-33 in the first year, which was much less noticeable in 1918. In all three years the soil differences are smaller than the errors caused by the experimental technology.

### Number 4

Haritonenko (36), Versuch der landwirtschaftlichen Versuchsstation Iwanowskoje, Gouvernement Nowgorod. Versuchsfläche 5 ha 68 a mit 416 Teilstücken zu 136,5 qm. Die Reihe I weist erheblich geringeren Boden auf als die drei anderen Reihen.

Translated: Haritonenko (36), experiment at Ivanovskoye Agricultural Experimental Station, Novgorod Governorate. Test area 5 ha 68 a with 416 sections (plots) of 136.5 square meters. Row I has significantly less soil than the other three rows.

36. Haritonenko, Pavlo. Neue Präzisionsmethoden auf den Versuchsfeldern. Arbeiten der landw. Versuchsstation Iwanowskoje 1904-06, S. 159. Note: P. Haritonenko is sometimes translated as Pavlo/Pavel Kharitonenko.

English: Pavel Kharitonenko Russian: Павел Иванович Харитоненко Russian name of Journal: Журнал опытной агрономии

1904. Paper is not in this volume? Zhurnal opytnoĭ agronomii. Russisches journal fūr experimentelle landwirtschaft. Journal de l’agriculture experimentale v.5 (1904) https://babel.hathitrust.org/cgi/pt?id=uc1.b2907722&seq=770

1905 vol 6. Paper is not in this volume? https://babel.hathitrust.org/cgi/pt?id=uc1.b2907723&seq=8

List of all volumes here. Missing 1906 issue 1-2. Searched for but not found. https://catalog.hathitrust.org/Record/007918356

### Number 5

Mercer und Hall (71), Mangold, Versuchsfeld Rothamsted. Versuchsfläche 40,40 a mit 200 Teilstücken zu 20,2 qm (9,2×2,2 m). Das Feld ist weitgehend gleichmäßig, obwohl seine Qualität von Nord nach Süd abnimmt, wie aus den Mittelwerten zu ersehen ist. Trans: 5. Mercer and Hall (71), Mangold, Rothamsted experimental field. Test area 40.40 a with 200 sections of 20.2 square meters (9.2 × 2.2 m). The field is largely uniform, although its quality decreases from north to south, as can be seen from the averages.

### Number 6

Mercer und Hall (71), Winterweizen, Versuchsfeld Rothamsted. Versuchsfläche 40,45 a mit 500 Teilstücken zu 8,09 qm. Die Fläche ist weniger aus geglichen als jene von Versuch 5. Trans: 6. Mercer and Hall (71), winter wheat, Rothamsted experimental field. Test area 40.45 a with 500 sections of 8.09 square meters. The area is less uniform than that of experiment 5.

### Number 7

Montgomery (86), Winterweizen, Versuchsfeld der Versuchsstation Nebraska, U. S. A. Versuchsfläche 6 a 30 qm mit 224 Teilstücken zu 2,81 qm. Das Feld wird von unten nach oben hin besser, ist auch in der rechten Hälfte ertragreicher als in der linken, entspricht aber einem sehr ausgeglichenen Versuchsfelde der Praxis. Trans: 7. Montgomery (86), winter wheat, experimental field at the Nebraska Experimental Station, USA. Experimental area 6 of 30 square meters with 224 sections of 2.81 square meters. The field gets better from bottom to top, and is also more productive in the right half than in the left, but corresponds to a very uniform experimental field in practice.

### Number 8

Tulaikow (131), Winterweizen, Versuchsfeld der landwirtschaftlichen Versuchsstation Besentschuk. Versuchsfläche 10 a 92 qm mit 240 Teilstücken zu 4,55 qm. Diese Fläche ist mäßig ausgeglichen.

Translated: Tulaikow (131), Winter wheat, experimental field of the Besenchuk Agricultural Experimental Station. Test area 10 x 92 sqm with 240 plots of 4.55 sqm. This area is moderately uniform.

Neyman cites: Tulaikow, Russian Journ Exp Agric 14 (1913). Number 2, p. 113

### Number 9

Tulaikow (131), Sommerweizen, genau wie bei Winterweizen, jedoch erscheint das Bild gleichmäßiger als jenes von Versuch 8.

Translated: Tulaikow (131), spring wheat, same as winter wheat, but the picture appears more uniform than that of experiment 8.

### Number 10

Jegerow (52), Hafer, Versuchsfeld der landwirtschaftlichen Versuchsstation Saumy (Gouvernement Charkow), Versuchsfläche 10 a 92 qm mit 240 Teilstücken zu 4,55 qm. Sehr gleichmäßiges Versuchsfeld.

Translated: 10. Jegerow (52), oats, experimental field of the Saumy agricultural experimental station (Kharkov Governorate), experimental area 10 x 92 sqm with 240 sections of 4.55 sqm. Very even test field.

### Number 11

Larsen (49), Timothyheu, Versuchsfläche 60 a mit 240 Teilstücken zu 25 qm. Die Versuchsfläche wird von Ost nach West langsam etwas besser, und von Süd nach Nord nimmt die Ertragsfähigkeit ziemlich stark ab (A-Streifen 1496 kg, B-Streifen 1449 kg, C-Streifen 1326 kg).

Translated: Timothy hay, test area 60 are with 240 sections of 25 square meters. The test area slowly improves slightly from east to west, and from south to north the yield decreases quite sharply (A strip 1496 kg, B strip 1449 kg, C strip 1326 kg).

Note: I called “Larsen” “holtmark.timothy.uniformity”

### Number 12

Lehmann (61), Reis, Versuchsfeld Hebbal bei Benjalore, Indien. Versuchsfläche 68,68 a mit 34 Teilstücken zu 20,2 qm, durch vier Jahre (1905-1908) fortgeführt. Dieser Versuch ist seines geringen Umfanges wegen nicht für alle zu be handelnden Fragen brauchbar.

Translated: Lehmann (61), Rice, Hebbal experimental field near Benjalore, India. Experimental area 68.68 a with 34 sections of 20.2 square meters, continued for four years (1905-1908). Because of its small scope, this experiment cannot be used for all questions to be addressed.

61 = Lehmann 7 to 9. Jahresbericht der Agriculturechemie 1905-1907.

### Number 13

Lehmann (61), Hirse, Versuchsfeld Hebbal bei Benjalore. Versuchsfläche 21 a 21 qm mit 105 Teilstüden zu 20,2 qm, durch drei Jahre (1905-1907) fortgesezt, jedoch sind die Teilstücke durch Gebäude getrennt. Dieses Versuchsfeld ist aus kleinbäuerlichem Besit zusammengekauft, also in früheren Jahren verschieden be arbeitet und bestellt worden, es ist die ungleichmäßigste Fläche von allen 13 Versuchen.

Translated: 13. Lehmann (61), millet, Hebbal test field near Benjalore. Experimental area 21 x 21 sqm with 105 sections of 20.2 sqm, continued for three years (1905-1907), but the sections are separated by buildings. This experimental field was purchased from small farmers property and was therefore worked and cultivated differently in previous years. It is the most uneven area of all 13 experiments.

Die Originalerntezahlen finden sich in den Tabellen des Anhanges, die die Lage der Teilstücke erkennen lassen. Es ließ sich infolge verschiedener Anlage der Versuche nicht ermöglichen, daß alle Versuche in einheitlicher Anordnung verrechnet wurden. Die Ergebnisse sind so übereinstimmend, daß die gezogenen Schlußfolgerungen große Sicherheit besigen.

Trans: The original harvest figures can be found in the tables in the appendix, which show the location of the cuts. Due to the different design of the experiments, it was not possible for all experiments to be calculated in a uniform manner. The results are so consistent that the conclusions drawn are very certain.

Untersuchungen über Beeinflussung der Genauigkeit. Trans: Studies on the influence of accuracy.

An Hand der bezeichneten 13 Versuche will ich nun im einzelnen nachweisen, welche Umstände und in welchem Maße diese auf die Genauigkeit der Versuchsergeb nisse einwirken. Es können jeweils nur die Endzahlen der mühsamen und sehr umfangreichen Berechnungen gegeben werden, die ich selbst ausgeführt habe.

Trans: Using the 13 experiments mentioned, I now want to demonstrate in detail which circumstances and to what extent they influence the accuracy of the test results. Only the final numbers of the laborious and very extensive calculations that I carried out myself can be given.