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Mixed soybean aphid pressure across southern Minnesota
Soybean aphid pressure is spotty across southern Minnesota.
Syngenta agronomist Tim Dahl says hot weather has helped limit populations.
“I would say western Minnesota probably has more aphids. That’s kind of the spot.”
University of Minnesota Extension crops educator Dave Nicolai tells Brownfield wet, humid conditions have also contributed to fewer soybean aphids this summer.
“Whether it’s heavy dew, high humidity, and or rain. There are fungal pathogens that have an effect on the soybean aphid lifecycle, and they can decrease the amount of soybean aphids in terms of the disease situation that can develop.”
Nicolai says a Redwood County grower in southwest Minnesota recently had aphid pressure at economic threshold and treated his soybeans.
Tim Dahl interview:
Dave Nicolai interview:
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