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Maximizing Efficiency of Recurrent Phenotypic Selection for Neutral Detergent Fiber Concentration in Smooth Bromegrass

^a Dep. of Agronomy, Univ. of Wisconsin, Madison, WI 53706-1597
^b USDA-ARS, U.S. Dairy Forage Research Center, 1925 Linden Dr. West, Madison, WI 53706-1108

View larger version (19K): [in a new window]   Fig. 1. Expected selection response (R) of neutral detergent fiber (NDF) concentration generated from 70 different selection criteria which were based on various numbers of blocks and harvests, regressed on the relative cost (C) of each selection criterion.

View larger version (23K): [in a new window]   Fig. 2. Frequency distribution of the benefit–cost ratio for 70 selection criteria based on different numbers of blocks (b) or years per selection cycle (y).