Department of Agronomy
The soybean is a summer annual legume, a native of eastern Asia. It has been grown in China and Japan for many hundreds of years, maiI1ly for human consumption. It was introduced into the United States early in the 19th century but did not become popular until a few decades ago. At that time importations were made into Kansas. Since that time its culture has rapidly spread over the United States. Its popularity is now generally recognized throughout the agricultural states. In localities where it has become increasingly difficult to secure stands of red clover the soybean is becoming more and more depended on for the restoration of nitrogen and as a source of green manure. The uses to which it is adapted are many. It is equally good for hogging-off, grain, soiling, silage, and is sometimes used as pasture and hay. Few other plants are so diversified in their usage. The ability of the plant to maintain itself and produce a crop during the hottest part of the summer is a point in its favor.
South Dakota Experiment Station, South Dakota State College of Agriculture and Mechanic Arts
Evans, A.T. and Fowlds, M., "Soybeans in South Dakota" (1921). Research Bulletins of the South Dakota Agricultural Experiment Station (1887-2011). 193.