Size, Shape and No. of Replication of Plot in Relation to Field Experiment with Wheat Variety PIRSABAK-2004

Abstract

The need for determining a standard size and shape for an experimental plot for all crops in different area of the Khyber Pakhtunkhwa, under different condition like irrigated or rain fed is urgent. The Experiment on size and shape of plot with wheat variety pirsabak-2004 is performed in Agriculture Research Institute Tarnab during 2012-13. The land under experiment was under wheat rotation in previous year, and all operation like cultural manuring etc. were uniformly applied over all area. The variance analysis of yield was done for (a) between blocks (b) within blocks bared upon the trend in the co-efficient of variation the most feasible width of the experimental plot is 2.5. While long and narrow plots are more efficient than shorter and wider plots of the same size. Based upon theoretical numbering of replications in order to bring down C.V to 5%, it is found that the number of replication in case of plot size 10^/ x 4^/ is in between 2-6. The fertility trend moves gradually from west to east, as compared to the North-East, which is less fertile side. The South-Western size gives the high rate of fertility. Based on the study a plot size of 10^/x4^/ or 3.05 x 1.22 meter is the most suitable for experimental purpose.