Crop & Pest Report

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Entomology

ent.knodel.1.lady beetle larvae

Soybean Aphid Scouting Alert (08/06/14)

Soybean aphid populations are growing fast with these moderate temperatures (high 70sF to low 80sF) and many new colonies and winged aphids are present in fields.

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ent.knodel.red sunflower seed weevil

Get Ready To Scout for Red Sunflower Seed Weevils (07/31/14)

Red sunflower seed weevil (RSSW) adults will be emerging soon and will fly to the nearest flowering sunflowers.

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Banded Sunflower Moth and Sunflower Moth Trap Update (07/31/14)

Sunflower moth continues to be trapped at low, sub-economic levels in the IPM scouts’ pheromone traps.

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Soybean Aphids (07/31/14)

The IPM Crop Scouts surveyed 92 soybean fields last week and soybean aphids were observed in only 9% of the fields surveyed.

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ent.knodel.lygus bug

Insect Control in Confection Sunflowers (07/31/14)

Control of seed-infesting insect pests is important for confection sunflowers and dehulled oilseed sunflowers since they are grown under contract with very low tolerance levels of insect seed damage.

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ent.knodel.4.banded sunflower moth

Time to Scout for Banded Sunflower Moth (07/24/14)

IPM scouts are detecting increasing numbers of banded sunflower moths in pheromone traps.

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ent.knodel.7.wheat midge dd and wheat growth stages

Wheat Midge Update (07/24/14)

Wheat midge is near the end of its flight...

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ent.knodel.3.sunflower moth trapping

Sunflower Moth Detected in Traps (07/24/14)

One to two sunflower moths per trap per week were detected in IPM scout’s pheromone traps in Golden Valley, Stark and Cass Counties.

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ent.knodel.1soybean growth stages

Scout for Soybean Aphids (07/24/14)

The soybean aphids have arrived right on time!

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ent.knodel.wheat midge 2013 larval survey

Wheat Midge Degree Day Map (07/17/14)

Continue to scout for wheat midge from heading through early flowering (<50% flowered), especially in areas where the 2013 fall soil survey indicated moderate to high risk for wheat midge larvae (see map on right).

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ent.knodel.adult grasshopper

Watch For Increasing Grasshoppers (07/17/14)

Grasshopper nymphs are increasing in some areas (see maps below) and may start moving into field edges of crops.

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ent.knodel.sunflower grwth stage and banded sunflwr moth.maps

Banded Sunflower Moth Emerging (07/17/14)

IPM scouts trapped banded sunflower moth at one location near Carrington REC in Foster County, so emergence is beginning.

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ent.knodel.soybean aphids map

No Soybean Aphids (07/17/14)

The IPM Crop Scouts have surveyed over 80 soybean fields last week and no soybean aphids were observed in North Dakota.

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ent.knodel.argus tortoise beetle larvae

Argus Tortoise Beetle (07/17/14)

This peculiar looking larva is called the Argus tortoise beetle (Chelymorpha cassidea (Fabricius)).

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ent.knodel.3.thrips

Scout for Barley Thrips (07/10/14)

Eighty-seven percent of the barley is in the advanced jointing crop stage in North Dakota (USDA NASS, ND – July 7, 2014) and susceptible to damage from barley thrips.

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ent.knodel.2.leafy.spurge.sunflower.dd

Collect Leafy Spurge Flea Beetles (07/10/14)

The updated degree day map for leafy spurge flea beetles (Aphthona species) indicates that land managers should collect adult flea beetles in North Dakota.

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Wheat Stem Sawfly Emerging (07/10/14)

NDSU IPM scouts and crop consultants have observed the first adult wheat stem sawflies...

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Aster Leafhoppers - Low in Canola (071014)

Aster leafhoppers were detected in only 23% of the canola fields surveyed from June 30 through July 3 in North Dakota and Minnesota.

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Aster Leafhoppers Update (07/03/14)

Aster leafhoppers were found in only 20% of the canola field surveyed from June 21-25 in North Dakota and Minnesota.

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ent.knodel.2013 wheat midge larval survey

Increased Risk For Wheat Midge In NC ND (07/03/14)

Soil samples in North Dakota indicate increasing levels of overwintering wheat midge larvae (cocoons) in localized areas for the 2014 season.

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