This article discusses some of the important factors to consider when contemplating corn on corn. Only the factors that apply to the individual producer will be discussed. There are a number of environmental and societal costs and benefits that are important; however, space does not permit going into that discussion here. The biggest factor in comparing the different rotations is the yield differences. Research has shown that there is a yield drag of approximately 5 to 15 percent for second-year corn relative to first-year corn. This yield difference varies by soil and location. The yield penalty is most prevalent in bad weather years.
Iowa State University
Duffy, Michael Douglas and Correll, David, "The economics of corn on corn" (2007). Integrated Crop Management News. 1165.
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