Estimation of Optimum Plot Size for Field Experiment on Green Gram (Phaseolus rediatus L.)
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Date
2004-05
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Agricultural Statistics Department, N. M. College of Agriculture Gujarat Agricultural University
Abstract
Estimation of optimum plot • size for field
experiment on Co 4 variety of green gram was conducted
during the year 2002 at the Pulse Research Station,
Agricultural University, Navsari. The green gram yield data of
1200 plots (basic units; the size of each basic unit was I.OOm
x 0.90 m i.e. l.OOm length x 2 rows) were recorded and
analyzed to work out optimum size and shape of the plot using
three different approaches viz. Maximum curvature method,
Fairfield Smith's variance method and Spatial correlation
method. The size and shape of the block was determined and
relative efficiency of different experimental designs and
number of replications and relative land use efficiency were
also compared. The results revealed the followings.
The variability as judged by coefficient of variation
(C.V.) per unit area decreased with the increase in plot size.
When this relationship expressed in equation form
transforming variable plot • SIze (x) to In scale. the
predictability of coefficient of variation was high (R:! = 0.90).
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Citation
JAYANTILAL BALUBHAI PATEL_34002