Tips for weed management in soybeans
Cultivate only deep enough to achieve weed control since deep cultivation may disturb soybean roots, bring weed seed to the surface, and disturb the layer of soil previously treated with an herbicide.
Know Your Weeds
Choose control methods that are effective for your specific weed problem. Generally, for preplant and preemergence applications, the weed problems must be anticipated since weeds may not have emerged at the time of application.
This can best be done by observing the field in the fall and recording the weeds present and their location in the field. These “weed maps” can be very useful the next spring in refreshing your memory and making a decision on what herbicide to purchase.
Herbicides are one of the most effective tools for weed control in soybeans. Preplant or preemergence applications combined with the previously discussed management practices are important in ensuring that the soybeans have the initial competitive advantage. One of the problems often encountered during this period is lack of rain to activate surface-applied herbicides.