University of Minnesota-Crookston Entomologist Ian MacRae saw an increase of a variety of aphids caught in traps last week, but nothing reaching threshold levels yet. “We have nowhere near what we had last year. It was a huge aphid year with a lot of vectors flying around. We didn’t have anything near that. We did see a large jump. We also are starting to see soybean aphids.” MacRae tells farmers to keep scouting soybean fields. “Don’t spray unless you’re over that threshold and that threshold is 250 aphids per plant. Populations are going up.”
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