a Dep. of Crop and Soil Sciences, Penn State Univ., University Park, PA 16802 b Dep. of Agronomy, Univ. of Wisconsin, 1575 Linden Dr., Madison, WI 53706
Fig. 1. Changes in corn forage quality changes with defoliation at V7, V10, R1, and R4 (Ritchie et al., 1996). Model equations used treatment means for each environment. Graph values are treatment means averaged across environments.