Many fields in southern Iowa have significant infestations of volunteer corn. Research at Iowa State University in 2007 found that one volunteer corn plant per 10-foot of row resulted in a 1.3 percent yield loss. South Dakota State University researchers found that volunteer corn was much more competitive in soybean than corn, thus management is critical in both corn and soybean to protect yields.
Iowa State University
Hartzler, Robert G., "Volunteer Corn Management" (2009). Integrated Crop Management News. 665.
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