Plants flowering Pod Green seed pods developed Seed Pods containing seed at various stages of development Grasses and legumes also differ in forage yield potential. Under good growth conditions and high rates of nitrogen fertilization, different species of tall-growing cool season grasses typically have similar yield potentials, with a maximum yield of about 6 tons per acre. Legume species, however, differ greatly from one another in yield potential. Under optimum soil and environmental conditions, alfalfa yields can approach 8 tons per acre. Usually, however, maximum yields are about 5 to 6 tons per acre.
Legumes usually have a higher nutrient concentration and greater intake potential than grasses.
Some weeds, such as quackgrass, can be excellent sources of forage similar in quality to more commonly grown forage grasses. Table 5 . Table 6 .