Bean Leaf Beetles are Feeding

As predicted, now that we have soybeans emerging, bean leaf beetle adults have moved from the forages to the soybean fields (Figure 1). Cruiser treated seed will help protect the crop from this first batch of adults but those fields not treated need to be scouted to determine if action is necessary. 16 beetles per foot of row in the seedling stages or if there is significant clipping warrants control. Keep in mind too, very early planted soybeans (early May) that are just emerging now may only get a few more weeks of protection with Cruiser, as typically control is achieved until approx 40-50 days after planting. Keep an eye after that for any adults that may still move in and start feeding as they are more likely to survive.

Figure 1. Overwintering bean leaf beetle adult in seedling soybean field.

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