Crop & Pest Report

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Entomology

jan.1

Mystery Insect (05/12/16)

This large worm (or larva) about 2 inches long was found tunneling into the heartwood of an old ash tree near Minot, ND.

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jan.3

Continue to Scout for Cutworms (05/12/16)

Cutworms are still being reported causing damage in winter wheat, spring wheat, and field peas in NW and SW North Dakota, and NE Montana.

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jan.4

Cereal Aphids Arrive Early (05/12/16)

Our first cereal aphids, English grain aphids and bird cherry oat aphids were detected in wheat last week in Cass and Richland counties in southeast North Dakota.

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mark.1

Watch for Insect Pests in Seedling Sugarbeet Fields (05/12/16)

The early start to field preparation this spring likely resulted in some sugarbeet seed being planted into cool soils.

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ent.knodel.4.crane fly

Mystery Insect (05/05/16)

A few questions have come into the office on what these large mosquito-like insects are!

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Updated NDSU Extension Entomology Bulletins (05/05/16)

These revised crop insect pest publications summarize the Integrated Pest Management practices for that insect, including identification, life cycle, crop damage, pest monitoring, cultural control, host plant resistance, biological control and chemical control.

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2016 Revised Handy Bt Trait Table for Corn (05/05/16)

This table summarizes the transgenic traits that are available in corn for insects and weed management.

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ent.knodel.1.army cutworm larva

Cutworms Active (05/05/16)

Army cutworm and pale western cutworm have been reported feeding on winter wheat and weedy cultivated fields in NW and SW North Dakota.

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Consider Pros, Cons of Alternative Grain Storage Methods (08/27/15)

With some of last year's grain crop still in storage and a bumper crop expected this year, the demand for grain storage is high.

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ent.knodel.3.soybean aphid map

Soybean Aphid Decline (08/27/15)

Soybean aphids are decreasing or stagnant in most soybean fields. You can see this in the final soybean aphid map (below) from the IPM scouting program.

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ent.knodel.2.cool grain chart

Manage Insect Pest Problems in Grain Bins (08/27/15)

This article is worth repeating - the importance of getting bins ready for grain storage to minimize insect pest problems in bins (2013 Crop & Pest Report).

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ent.knodel.1.beneficials

Good Bug Corner - Good Bugs and Fungi (08/27/15)

This week’s Good Bug Corner features several good bugs and fungal pathogens.

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Sunflower Insect Traps (08/13/15)

Banded sunflower moth traps continue to have high trap counts, >100 moth per trap per week, in most sunflower producing areas.

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Good Bug Corner – Tachinid Flies (08/13/15)

This week’s Good Bug Corner featured insects are the Tachinid flies in the insect family Tachinidae. The adult fly feeds on nectar of flowers and honeydew from aphids or scale insects.

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Hessian Fly Damaged Wheat (08/13/15)

Several emails and calls about lodged wheat from Hessian fly infestations have been reported in primarily Pembina and Williams counties.

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2.ent.knodel.aphid map 1

Soybean Aphids & Hot Temperatures (08/13/15)

Soybean aphids increased with the favorable temperatures in the low 80s F last week. However, the recent hot weather (>90 F), will slow population growth.

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1.ent.knodel.butterfly

White Butterflies Flying Around (08/13/15)

I’ve received many calls and emails about all of the white butterflies flying around ditches, canola, alfalfa and other areas and whether they are an insect pest.

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ent.knodel.8.corn rootworm

Adult Corn Rootworms Emerging (08/06/15)

Northern and western corn rootworm adults were observed in field corn near Page, northern Cass County. The adult northern corn rootworm is green beetle and about ¼ inch long.

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ent.knodel.7.sunflower moth.1

Sunflower Insect Traps (08/06/15)

Banded sunflower moth peaked last week with our highest trap numbers recorded yet for the season. Sunflower moth also increased, but numbers are still below the economic threshold for traps.

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ent.knodel.6.rove beetle

Good Bug Corner – Rove Beetles (08/06/15)

This week’s Good Bug Corner featured insects are the Rove Beetles in the insect family Staphylinidae.

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