The North Dakota State University Crop and Pest Report says the current weather is favorable for the pest and the population can double every seven days. Soybean aphids were found in over 30 percent of the fields scouted. The economic threshold for treatment is 250 aphids per plant on 80 percent of the field. Pyrethroid-resistant soybean aphids are found in portions of eastern North Dakota and Group 3A insecticides should be avoided.
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