Monday, March 25, 2013
Continuous Corn Yield Penalty
I have written more than once about the continuous Corn yield penalty. No-Till Farmer offered this article on Understanding The Continuous Corn Yield Penalty . University of Illinois researchers peg the cause on N availability, corn stover accumulation, and unfavorable weather. This goes a little bit against conventional wisdom that the disease and insect cycles are a factor. However I find little argument with the conclusions. The researchers also found that the yield penalty continued to get worse each year of their seven year study. I wrote a blog in October on Corn Following Corn. It looks like I should add residue management to my suggestions on how to grow continuous corn. It looks like incorporation of residue to speed up decomposition would be advantageous.