a1 Agriculture Canada Research Station, PO Box 29, Beaverlodge, Alberta, Canada T0H 0C0
a2 Agriculture Canada Research Branch, Research Program Service, Ottawa, Ontario, Canada K1A 0C6
A study, conducted in the Peace region of Canada, determined the effects of the stand and management treatments of four herbage experiments (1986–88) on the yield and quality of subsequent crops of barley (Hordeum vulgare L.) harvested in 1989 and 1990. Quantitative relationships indicated that the crop management treatments most conducive to good yield and quality of herbage were also the most beneficial for subsequent high yield and quality of the barley grain. Unless designs orthogonal to those previously used can be found, covariance adjustment procedures are recommended to minimize the residual effects of previous experiments.
(Received May 07 1992)