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Statistical Analysis Of Field Wheat Varietal Performance Trials, A. M. Feyerherm, R. G. Sears, J. J. Higgins

Conference on Applied Statistics in Agriculture

The purpose of this research was to formulate statistical models and assumptions to apply to the problem of comparing wheat varieties for yielding ability among locations within seasons and over seasons. The methodology could just as well be applied to field testing of other crops for yield or other characteristics of interest (test weight, protein level, etc.)

The methodology approaches the problem of comparing varieties by comparing how well each "measures up" when matched against some common checks. For each variety, the basic data are differences in yield between the variety and the average yield of the checks at different …