Low glyphosate prices, a record pace of corn planting and high winds or rain have resulted in a high percentage of corn fields not being treated with preemergence herbicide programs. While weeds can be successfully controlled with a total postemergence program, early removal of weeds is essential in order to protect yield potential of the crop.
Iowa State University
Hartzler, Robert G., "Protect Your Corn Yields from Weeds" (2010). Integrated Crop Management News. 469.
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