This is done by planting such crops as hemp, clover or cowpeas.
"The Library of Work and Play: Gardening and Farming." by Ellen Eddy Shaw
These are the leguminous plants; such as clover, beans, cowpeas, alfalfa, soy bean, etc.
"The First Book of Farming" by Charles L. Goodrich
A Member: How about cowpeas?
"Trees, Fruits and Flowers of Minnesota, 1916" by Various
The clovers, cowpeas, vetches, soy beans, and alfalfa are all legumes.
"Agriculture for Beginners" by Charles William Burkett
Rye may be sown in the fall and plowed down in May, and cowpeas planted to be disked into the soil.
"Crops and Methods for Soil Improvement" by Alva Agee
Ground which produced a heavy crop of cowpeas, velvet beans or beggarweed the previous season is excellent for the purpose.
"The Pecan and its Culture" by H. Harold Hume
Many leguminous plants, such as alfalfa, cowpeas, peanut vines, etc., may be cut fine and used as an absorbent for molasses.
"The Philippine Agricultural Review" by Various
Charleston Tennessee is the home of the International Cowpea Festival and Cook-off beginning at 10:00 AM on Saturday, September 15th in Charleston Park.
A new kind of bag for cowpeas in western Africa cuts weevil infestations and boosts incomes and productivity.
Black-eyed peas are a subspecies of the cowpea.
Let's just say that at Purdue University, some of the greatest breakthroughs are being made in the worlds of cowpeas, watermelons and robots.