Biometrical Letters Vol. 44(1), 2007, pp. 23-31


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ON DETERMINATION OF OPTIMUM SIZE AND SHAPE
OF PLOTS IN FIELD TRIALS


Satyabrata Pal1, Satyananda Basak2, Subhabaha Pal3, Sanpei Kageyama4

1Bidhan Chandra Krishi Viswavidyalaya, Department of Agricultural Statistics, Mohanpur, Nadia, West Bengal, 741252, India, e-mail: satbrpal@vsnl.net
2Uttar Banga Krishi Viswavidyalaya, Department of Agricultural Statistics, Pundibari, Coochbehar, West Bengal, 736165, India, e-mail: satyabasak@rediffmail.com
3Post Graduate Student, Calcutta University, India, e-mail: subhabaha@msn.com
4Hiroshima University, Department of Mathematics, 739-8524, Japan, e-mail: ksanpei@hiroshima-u.ac.jp


One of the most important issues confronted by agriculturists/agronomists is to determine the suitable plot size and shape with respect to a particular crop, which will enable to maintain the organization and conduction of the experiment at a high level of precision. The solution to the problem is based on statistical considerations. This paper presents a general method by which the optimum plot size can be determined by a systematic analytic procedure. Though the method is described under isotropic situation, it can be employed to anisotropic situation as well.


Coefficient of variation, non-random data, radius of curvature, variogram,