The heavy rains across the state have made timely postemergence weed control difficult, even in fields treated with preemergence herbicides. This leads to questions as to what can be done to insure control of weeds larger than specified on herbicide labels. Keep in mind that if there was a way to improve the consistency of a herbicide on large weeds, the manufacturer probably would have included that practice on the label. This article will focus on managing large waterhemp in soybean, but many of the principles are the same with other weeds.
Iowa State University
Hartzler, Robert G., "Controlling Large Weeds - Do You Feel Lucky?" (2014). Integrated Crop Management News. 845.
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