Soybeans have been under continuous observation and test at the Iowa station since 1910. As the value of soybeans for Iowa farmers became apparent, more attention was given to the crop until the investigational work has become quite comprehensive.
Interest in the crop was not evident thruout the state until about 1916, but has since been keen, and the acreage in many counties has increased remarkably. While the soybean acreage in Iowa is not large as compared with some of the other Iowa crops, the fact that it has more than doubled annually thru a series of years is significant.
Hughes, H. D. and Wilkins, F. S.
"Soybeans for Iowa,"
Bulletin: Vol. 18
, Article 1.
Available at: https://lib.dr.iastate.edu/bulletin/vol18/iss228/1