Descriptive Table

Crop	Adaptation as Food for Animals	Life	Remarks
Alfalfa	Hay	Perennial	All animals like it; hogs eat it even when it is dry.
Red clover	Hay and pasture	Perennial	Best of the clovers for hay.
Alsike clover	Hay and pasture	Perennial	Seeds itself for twenty years. This clover is a great favorite with bees.
Mammoth clover	Hay and pasture	Perennial	Best for green manure.
White clover	Pasture	Perennial	Excellent for lawns and bees.
Japan clover	Pasture	Perennial	Excellent for forest and old soils.
Cowpea	Hay and grain	Annual	Used for hay, green manure, and pastures.
Soy bean	Hay and grain	Annual	Often put in silo with corn.
Vetches	Hay and soiling	Annual	Pasture for sheep and swine. With cereals it makes excellent hay and soiling-food.

Source: Agriculture for Beginners