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Aphids are Here! (06/28/18)

Low populations of soybean aphids and cereal aphids are being found in the IPM Survey of ND and MN (soybeans only).

Aphids are Here!

Low populations of soybean aphids and cereal aphids are being found in the IPM Survey of ND and MN (soybeans only). This is a good time to start up your scouting program for both aphids!

In North Dakota, soybean aphids are being reported from Grand Forks County (not shown on map) and Pembina County in northeast, and Sargent County in southeast. Watch the YouTube video on Scouting for Soybean Aphids, if you need a refresher:

https://www.youtube.com/watch?v=KQ6K_lf12Lg

For cereal aphids, low populations (<4% of plants infested) were observed in Cass, Dickey and Foster Counties. Only English grain aphid was found on spring wheat. Treatment is recommended at 85% of the plants infested. Spring wheat is susceptible to economic populations of cereal aphids through the completion of heading. Since 27% of the spring wheat is headed, it looks like most of the spring wheat will outgrow any risk of economic losses from cereal aphids this year. Good news! However, any late-planted spring wheat will be at a higher risk for cereal aphid infestation, since they arrive on southerly wind flows all summer.

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 Janet J. Knodel

Extension Entomologist

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