Crop & Pest Report

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Entomology

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Sugarbeet Root Maggot Update: Fly Activity Slowly Building (06/12/14)

Sugarbeet root maggot (SBRM) fly activity is being monitored this year at 40 Red River Valley (RRV) sites by NDSU staff in cooperation with American Crystal Sugar Company and the MinnDak Farmers Cooperative.

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Scout for Wheat Midge (07/10/14)

Scouting for wheat midge is critical 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.

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Sugarbeet Root Maggot: Fly Activity Low, Peaks Expected in 1 to 2 Weeks (06/05/14)

Corresponding with the relatively slow start to the 2014 growing season, sugarbeet root maggot (SBRM) fly emergence is also off to a slow start.

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Scouting Key to Successful Insect Pest Management (06/05/14)

Scouting is crucial now when field crops are in early development stages. So, scout regularly for alfalfa weevil, cutworms, and grasshoppers

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High Populations of Flea Beetles in Canola (06/05/14)

Flea beetles have emerged in large numbers with the warm, sunny days. Significant feeding injury (>50% defoliation) and stand loss are being observed in Bottineau, Rolette, Towner, Cavalier, Ramsey, Walsh, and Dunn Counties, especially on the early-seeded canola (before mid-May).

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Not a Giant Mosquito (05/29/14)

Several calls have come in about these giant mosquito-like insects.

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Adult Alfalfa Weevil Emerging (05/29/14)

Due to the recent hot weather, adult alfalfa weevils are emerging and have been observed in the southern regions and north central regions of North Dakota (sources: V. Chapara, NCREC).

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Ent Alfalfa Weevil

Too Early for Alfalfa Weevil Scouting (05/22/14)

Alfalfa weevil was a major pest problem in forages last year, especially in the southwest and south-central regions of North Dakota.

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Slow Development for Soil Insects (05/15/14)

Most of the bare / turf soil temperatures are still below 50 degrees F for most of North Dakota.

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Be Safe – Prevent Tick Bites! (05/08/14)

With warmer spring weather, tick season is upon us.

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Awed To See European Corn Borer Reaching High Levels In NC ND (09/12/13)

In a pocket of non-Bt corn production, European corn borer damage was found to be at high levels in the North Central Region of North Dakota. Out of 100 plants scouted in a “Z” pattern, 20 plants were found infested with European corn borer larvae.

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Aphids Infesting Area Sugarbeet Fields (09/12/13)

Sugarbeet root aphid (SBRA) infestations have been reported as occurring in several sugarbeet fields in the Red River Valley during the past few weeks.

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Soybean Aphids Moving To Buckthorn (09/12/13)

Winged soybean aphids were observed moving to buckthorn (Rhamnus spp), a small woody shrub. Buckthorn is common in our shelterbelts and woods in North Dakota.

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New Pesticide Labels Will Better Protect Bees and Other Pollinators (08/22/13)

WASHINGTON – In an ongoing effort to protect bees and other pollinators, the U.S. Environmental Protection Agency (EPA) has developed new pesticide labels that prohibit use of some neonicotinoid pesticide products where bees are present.

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Flea Beetles Feeding on Pods of Canola (08/22/13)

The new generation of adult flea beetles is emerging and feeding on developing pods of canola. This is the overwintering generation that will emerge next spring.

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Sap Beetles Feeding On Corn Ears (08/22/13)

Sap beetles (or picnic beetles) have been observed feeding and damaging corn ears. One of the most common sap beetles is Glischrochilus quadrisignatus, which is ¼ inch long, black with four orange-red spots on the wing covers and has “knobbed” antennae. Adult sap beetles feed on decaying, ripening plant material.

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Watch For Late Season Grasshoppers (08/22/13)

This time of year, adult grasshoppers start to move around and feed on late-season row crops, such as sunflowers, corn, dry beans, soybeans or flax.

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Soybean Aphids and Spider Mites Update (08/22/13)

Continue scouting for soybean aphids and spider mites in soybeans.

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Blister Beetles in Alfalfa (08/22/13)

Black blister beetles (Epicauta pensylvanica) were observed damaging blossoms and clipping stems of alfalfa regrowth (after cuttings) in McIntosh County. As long as the blister beetles are not feeding directly on the crowns and destroying >50% of crowns, the alfalfa should be able to compensate next spring for loss growth.

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Spotted-Wing Drosophila Detected (08/08/13)

The spotted-wing Drosophila, Drosophila suzukii, was detected in a cherry fruit sample from the Carrington Research Extension Center that was submitted to the NDSU Plant Diagnostic Laboratory and identified by Patrick Beauzay.

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