Determination of optimum plot size, shape and no. of replications in wheat yield trial
Paper Details
Determination of optimum plot size, shape and no. of replications in wheat yield trial
Abstract
The need of determining a standard size and shape for an experimental plot of major crops in different area of the Khyber-Pakhtunkhwa, under different climatic conditions like irrigated or rainfed. The experiment on size and shape of plot with wheat variety Pirsabak-2004 was conducted in Agriculture Research Institute Tarnab, Peshawar during the year 2014-15. The land under experiment trial was under wheat rotation in previous year, and all operation like cultural manuring etc. were uniformly applied. The co-efficient of variation for the most feasible ratio of length to width (i.e. 2.50) in the experimental plot was found to be 23.95%. The long and narrow plots are more efficient as compared to shorter and wider plots of the same size. Based upon theoretical numbering of replications in order to bring down C.V to 5%, the suitable number of replication in case of plot size (3.05 m × 1.22 m) was found between 2 to 6. The fertility trend moves gradually from West to East, as compared to the North to East. The South-Western side also gave the high rate of fertility, based on the study of plot size of (3.05 m × 1.22 m) which was found most suitable for experimental purpose.
Crews WC, Jones GL, Mason DD. 1963. Field plot technique studies with flue-cured tobacco. I Optimum plot size and shape. Agron. J 55, 197-9.
Fisher RA. 1925. Statistical methods for Research Workers, 3rd edition 1930 Edinburgh, Oliver and Boyd.
Gomez KA, Gomez AA. 1984. Statistical procedures for agricultural research. 2nd Edn. New York, USA: John Wiley & Sons.
Leilah AA, Al-Khateeb SA. 2007. Convenient quadrat size, shape and number in the desert rangeland of Saudi Arabia. Pakistan J. Agric. Res. 20(1-2), 62-70.
Masood A. Asif, Mujahid Yaqoob, Khan MI, Abid Saleem. 2006. Improving Precisions of Agricultural Field Experiments. Journal of Sustainable Development Vol.3 (1, 2), 11-13 Africa.
Mohammad F, Bajwa TM, Ahmad S. 2001. Size and shape of plots for wheat yield trials in field experiments. Inter. J. Agric. and Biol 3 (4), 397-402.
Nasr SM. 1997. Estimation of Optimum plot size, shape and number of replications for wheat yield trial under different fertilization conditions. Egyptian J. Agric. Res 75(4), 1175-1189.
Rampton HH, Petersen RG. 1962. Relative efficiency of plot sizes and numbers of replications as indicated by yield of orchard-grass seed in a uniformity test. Agron J 54, 247–9.
Reddy MN, Chetty CKR. 1982. Effect of plot shape on variability in smith’s variance law. Expl. Agric 18, 333–8.
Westover KC. 1924. The influence of plot size and replication on experimental error in field trials with potatoes W.Va. Agri. Exp. Sta. Bull 189, 32 PP.
Immaer FR. 1932. Journal of Agricultural Research Washington, D.C Vol. 44, Key No. G- 811.
William G, Cochran and Gertrude M. Cox. 1959. Experimental Designs, Second Edition.
Wiedemann AM, Leininger, LN. 1963. Estimation of optimum plot size and shape for safflower yield trials. Agron. J 55, 222–5.
Syed Asghar Ali Shah, Sajad Ali, Jan Ayaz, Ihsan Ullah (2017), Determination of optimum plot size, shape and no. of replications in wheat yield trial; IJB, V10, N6, June, P202-207
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