Soybean is a legume with a seed content of approximately 38 percent protein. Because of its seed protein concentration, soybean has a large nitrogen demand and continues to increase as yield increases. Total nitrogen accumulation for soybean is supplied by two sources: the nitrogen fixation and from the residual soil nitrogen pool.
Iowa State University
Pedersen, Palle, "When to Inoculate Soybean Seed in Iowa" (2009). Integrated Crop Management News. 685.
The Iowa State University Digital Repository provides access to Integrated Crop Management News for historical purposes only. Users are hereby notified that the content may be inaccurate, out of date, incomplete and/or may not meet the needs and requirements of the user. Users should make their own assessment of the information and whether it is suitable for their intended purpose. For current information on integrated crop management from Iowa State University Extension and Outreach, please visit https://crops.extension.iastate.edu/.