Fig. 4. Forage dry matter distribution of alfalfa cultivars with fall dormancy (FD) of ratings 1 to 4 and FD ratings of 5 to 8 as a function of harvest month in the supplemental irrigation system. Vertical bars indicate ±1 SE. Data are the means of three replications with one to five cultivars representing each FD rating (excluding FD 2) and four growing seasons. DM, dry matter.