Fig. 1. Nonlinear relationships between leaf area index at R5 [LAI(R5)] and canopy cover percentage (R5), canopy cover percentage (R5) and total vegetative dry matter at R5 [TVDM(R5)], and TVDM(R5) and yield for 14 cultivar–plant population treatment combinations grown across two years (1997 and 1998) near Baton Rouge, LA. Each point represents a cultivar–plant population–year treatment combination.