Cooler Weather Boosts Populations of Soybean Aphids

NORFOLK - Humans, animals and crops all enjoyed a break from triple digit temperatures last weekend, and most areas of Northeast Nebraska got at least a little rain. But University of Nebraska Lincoln Extension Educator Wayne Ohnesorg says the cooler weather provides perfect conditions for growing populations of soybean aphids, and producers need to scout their fields about once a week for the rest of the season. Ohnesorg says one way to scout is to count every aphid on selected plants. He says if the per plant population is at 250 and increasing, it is time to treat. Another method - called speed scouting - can be used. He says the University has an Apple app for that, or producers can use a spreadsheet available on the university's web site.

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