Performance of preemergence herbicides in many areas of the state may be less effective than normal due to limited rain following application. Although weed emergence following planting was reduced by dry soils and cool temperatures, it is likely that most fields will have some weeds that emerged during this period. Systematic scouting of fields, beginning shortly after crop emergence, will be essential to determine how best to manage weeds throughout the remainder of the season.
Iowa State University
Hartzler, Bob, "Adjusting Weed Management Plans After The Dry Start" (2021). Integrated Crop Management News. 2705.
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