Glyphosate resistant (Roundup Ready) soybeans made postemergence weed control relatively easy with a single application. Recently, there have been a renewed interest in conventional soybean weed control options. Many of these soybean growers haven't planted conventional soybeans in well over a decade and the younger soybean growers have never planted conventional soybeans.

Regardless of a growers' reason to plant conventional soybeans, preemergence weed control programs are almost a necessity for growing conventional soybeans. It is extremely difficult to rely on a total postemergence conventional soybean weed control program. We have limited options for controlling broadleaf weeds with conventional soybean herbicides. It is imperative that we start out with a preemergence herbicide before or at time of planting and then be ready to apply a postemergence application to any weeds that escape. Timing of conventional postemergence soybean herbicides is critical because they won't kill big weeds.

The article below provides some suggested conventional preemergence soybean herbicide programs to consider.


Conventional Soybean Control Revisited (pdf; 80KB)