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Trends in Forage Yield and Nutritive Value of Hay-Type Sorghum spp.

^a Kansas State Univ., Southeast Agric. Res. Cent., P.O. Box 316, Parsons, KS 67357
^b Dep. of Stat., Kansas State Univ., Manhattan, KS 66506

View larger version (26K): [in a new window]   Fig. 1. Relationship between year of cultivar release and (A) yield or (B) crude protein (CP) concentration relative to the mean of the control cultivars in each trial. Fit of the regression equations was highly significant (see correlation coefficients in Table 2).

View larger version (18K): [in a new window]   Fig. 2. Relationships between year of cultivar release and leaf neutral-detergent fiber (NDF), leaf crude protein (CP) concentration, and stem CP concentration relative to the mean of the control cultivars in each trial. Fit of the regression equations was highly significant (see correlation coefficients in Table 2).