Farmers may want to add an insecticide with a fungicide application even if the treatment threshold has been reached. University of Minnesota Extension Educator Dave Nicolai says that is a danger because the insecticide will also take out beneficial insects. “Those are the good guys that are out in the field and you might make the situations a little worse if you’re too proactive,” said Nicolai. “I’m a little hesitant on jumping the gun because we want those beneficials out there as well.” With the recent heat, soybean aphids tend to go lower in the canopy making it more difficult to scout. “You certainly cannot do it from the pickup.”
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