Efficiency of alpha-lattice designs in international variety yield trials of barley and wheat
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Date
1997-02-01
Date Issued
ISI Journal
Impact factor: 1.082 (Year: 1997)
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Citation
S. K. Yau. (1/2/1997). Efficiency of alpha-lattice designs in international variety yield trials of barley and wheat. Journal of Agricultural Science, 128 (1), pp. 5-9.
Abstract
Use of an alpha-lattice design in 714 international yield trials of barley, durum wheat and bread wheat in 1990/91 to 1992/93 resulted in an average efficiency 18% higher than the randomized complete block design when average variance was used as the comparison criterion. Alpha-lattice was generally most efficient when the C.V.s of the trials were high. It was also slightly more efficient for low-yielding than for high-yielding trials, and for rainfed than for irrigated trials. Since the changeover to alpha-lattice designs requires no new major input or changes in present field layout, its use for international trials is recommended.
