Problems caused by unfavorable conditions this season have resulted in greater thannormal weed escapes. These weeds may reduce crop yields and definitely will contribute tofuture weed problems via new seed. While it is too late to protect crop yields, a commonquestion is whether herbicides can be used to reduce the quantity of viable weed seedproduced by weeds. While there is no simple answer due to the many different scenariosacross the state, in most situations late-season applications are not warranted.
Iowa State University
Hartzler, Robert G., "Can Weed Seed Production be Reducedwith Late-season Herbicide Applications?" (2019). Integrated Crop Management News. 2573.
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