Crop & Pest Report

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Entomology

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Cutworms Severe in SW ND (06/01/17)

Severe feeding injury and significant stand loss (several acres per field) from cutworms have been observed in canola, spring wheat, field peas and forages in southwest North Dakota this spring.

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Sugarbeet Root Maggot: Long-Range Forecast (05/25/17)

Sugarbeet Root Maggot (SBRM) fly activity is expected to begin and peak at nearly average dates this year.

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EPA Review of Pyrethroid Bifenthrin (05/25/17)

Bifenthrin provides protection again many chewing and piercing sucking insect pests and spider mites, and is labeled on over 120 crops nationwide.

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Alfalfa Weevil Active (05/25/17)

Alfalfa weevil adult and larvae have been reported defoliating alfalfa in Bowman County in southwest ND.

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Label Changes for Belay® Insecticides (5/18/17)

The active ingredient of Belay® insecticide is clothianidin, a third generation neonicotinoid, which has been registered for control of piercing sucking insects including stink bugs, aphids, plant bugs, Colorado potato beetle, leafhoppers and more.

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Watch for Ticks - Lyme Disease Moving West in ND (5/18/17)

With warmer spring weather, ticks are starting to get active and looking for hosts to feed on.

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Cereal Aphids in Winter Wheat (5/11/17)

Cereal aphids, English grain aphids and bird cherry oat aphids, were observed on May 9th in the winter wheat trial at Fargo by Dr. Friskop, NDSU Extension Plant Pathologist.

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Results of 2016 NW Pea and Lentil Survey for Insect Pests (09/15/16)

A scouting program located in northwest North Dakota was initiated in 2016, and included monitoring for several major insect pests of field peas and lentils from late May to mid-August.

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Potato Psyllid Alert (09/08/16)

Potato psyllids have been reported in specific fields in western and central North Dakota.

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Dingy Cutworm on Sunflowers (09/01/16)

Dingy cutworms moths are being observed laying eggs on sunflower heads (and other Asteraceae species), especially along weedy field margins.

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Monarch Migration (09/01/16)

Many people have remarked about how difficult it has been to find monarch butterflies or larvae (caterpillars) this year.

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Prevent Stored Grain Insects from Damaging Your Crops in Bins (08/18/16)

This article is worth repeating on the important of getting bins ready for grain storage to minimized insect pest problems in bins (Source: 2014 Crop & Pest Report).

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Pea Aphids in Field Peas (08/18/16)

Pea aphids are being observed at economic populations in the NW area of North Dakota (source: A. Kalil, NW Pulse Crop Survey, Williston REC).

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Soybean Aphids Continues to be Low (08/18/16)

In North Dakota, soybean aphid continues to be sub-economic.

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Corn Rootworms Emerging (08/18/16)

Northern corn rootworm beetles have been emerging the last two weeks.

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Flea Beetles Causing Feeding Injury to Canola Pods (08/04/16)

The new generation of adult flea beetles emerges after mid-July and feeds on the green foliage and developing green pods of canola.

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Grasshoppers Increasing out West (08/04/16)

Adult grasshoppers are starting to move into rows crops, such as flax, field corn and sunflowers, as the cereal grains are starting to dry down and be harvested, and ditches are hayed.

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Insecticide Update (08/04/16)

Updates on Zeal SC miticide, Agri Mek SC miticide, and Force 3G.

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Sunflower Insect Update (08/04/16)

Continue to scout for red sunflower seed weevils, and banded sunflower moths/sunflower moths in sunflowers until fields reach the R5.7 crop stage (70% of the head area has completed or is flowering).

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Mystery Insect (07/28/16)

This week’s mystery insect is a giant ichneumonid wasp called Megarhyssa atrata.

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