Abstract
RECENT communications by Sukhatme1'2 and Mahalanobis3 have established the conclusion that sample plots of a small size (25 sq. ft. or less according to Mahalanobis) give biased estimates of yield in sample surveys ; but whereas Sukl tme has shown the bias to. persist evenwith a plot-size of 118 sq. ft., Mahalanobis has expressed the view that it becomes practically negligible forplots of size larger than 40-50 sq. ft. Their results relate to crops grown unevenly by broadcasting the seed or sowing it in irregular lines. I have studied the problem of plot-size in yield surveys on cotton, which is sown by a drill in evenly spaced rows in Central India. The results4 are summarized here, as they provide for the first time information on this question applicable to drill-sown crops.
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References
Sukhatme, P. V., Nature, 157, 630 (1946).
Sukhatme, P. V., Nature, 158 345 (1946).
Mahalanobis, P. C., Nature, 158, 798 (1946).
Panse, V. G., Curr. Sci., 15, 218 (1946).
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PANSE, V. PLOT-SIZE IN YIELD SURVEYS. Nature 159, 820 (1947). https://doi.org/10.1038/159820a0
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DOI: https://doi.org/10.1038/159820a0
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