Kansas State University Extension cites turnips as among the best fall forage crops. The crop is short-seasoned with a fast growth rate being ready to use in 80 to 90 days. Turnip tops contain 15 to 22 percent proteins and the roots have about 10 percent proteins. Extend forage into late fall or winter by planting different varieties of turnip hybrids including Swede, a long-season plant with large, edible root. Swede takes up to 180 days for maximum production. The cultivar is higher yielding than other turnips and is well adapted to late-fall grazing.
Rye grass is one of the best sources of fall forage, according to Purdue University Extension. Rye produces better forage than a number of other fall or spring small forage grains given its rapid growth rate and high adaptability to low temperatures. Rye has less palatability as forage, but is still grazed heavily since it thrives in the absence of other green forages. Rye forage matures sooner than wheat and triticale and is more hardy in winter as compared to both these forage crops. Rye for forage is often used in combination with red or crimson clover.
Crimson clover is an annual legume generally planted in the fall for forage. The plant grows up to 2 1/2 feet tall and has light green, hairy foliage. Crimson clover performs best as fall forage in areas that do not experience extreme winters and germinates best in moist soils. The crop adapts well to infertile soils, preferring well-drained ground. The plant reseeds extensively with adequate growing conditions and sufficient levels of soil moisture. Crimson clover does not tolerate much or highly acidic soils and has a moderate level of tolerance for shade.