Crop & Pest Report

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Crop & Pest Report

ent.knodel.C.P.B.adult

Scout for Colorado Potato Beetles (07/03/14)

Adult Colorado potato beetles are emerging now from overwintering sites. The adult is 3/8 inch long, with oval body and a yellow-brown with 5 black stripes on each wing cover.

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ent.knodel.dd leafy spurge beetles

Degree Day Update for Leafy Spurge Flea Beetles (07/03/14)

The updated degree day map for leafy spurge flea beetles (Aphthona species) indicates that land managers can scout and/or collect adult flea beetles in North Dakota, based on the sunflower GDD model from NDAWN.

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ent.knodel.hessian fly larva

Hessian Fly Infestation in SW ND (07/03/14)

An isolated Hessian fly infestation was found in Syngenta’s hard red spring wheat variety trial near Beach in SW ND.

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Weather/Crop Phenology Maps (06/26/14)

Maps detailing corn accumulated daily growing days, percent normal rainfall, departure from normal average air temperature, and accumulated wheat growing degree days.

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Spraying Weeds in Less Than Optimum Environmental Conditions (06/26/14)

Most areas of Eastern North Dakota and Minnesota have received excessive amounts of rainfall in June.

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Strategies for Controlling Emerged Weeds in Sugarbeet Fields (06/26/14)

Weeds continue to emerge and are actively growing in sugarbeet fields in Eastern North Dakota and Minnesota as a result of recent widespread precipitation.

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wsi.zollinger.palmer.amaranth.poinsettia appearance

Weed Watch: Palmer Amaranth (06/26/14)

This may possibly be the most important Crop and Pest Report article (weeds) written in the 2014 cropping year.

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Soybean Iron Deficiency Chlorosis (06/26/14)

On my way to and from Devils Lake today, nearly every field of soybean had symptoms of iron deficiency chlorosis (IDC). Therefore, a short review is in order.

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Sulfur Deficiency in Valley High Clay Soils (06/26/14)

I have stated at many meetings that the high clay soils in the Red River Valley are high enough in organic matter and have a high enough sulfatic water table that sulfur fertilization is not needed. However...

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Slow Release Fix for N Issues? (06/26/14)

The row crops in our region look as poor now as in 2011, our last perpetually wet spring.

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ss.wick.franzen.kandel.img1.radishdecomposition

Considering Cover Crops on Prevented Plant Ground (06/26/14)

With prevented planting (PP) more common throughout North Dakota, using cover crops to prepare the land for next year is a desirable option.

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Blackleg on Canola (06/26/14)

Crop scouts are reporting low incidence of canola blackleg in Bottineau County.

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Timing of fungicides for Scab Control in Wheat and Barley (06/26/14)

Early planted barley is approaching the stage of greatest risk for Fusarium Head Blight infection (scab). Spring wheat is not far behind.

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Scab Risk for Flowering Wheat (06/26/14)

Using the scab risk models from NDSU and the FHB prediction center, scab risk for very susceptible varieties remains moderate to high for a majority of the state.

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IPM Survey – Disease Update (06/26/14)

The scouts visited 158 wheat fields and 22 barley fields last week.

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Problems with Potatoes Planted in Wet Soils (06/26/14)

The last two weeks remind us of the planting conditions last year. Although not as severe, many areas in the Red River Valley that have been planted have received a high amount of precipitation.

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ent.knodel.larva.flowers.diamondback.moth

Scout for Diamondback Moth in Canola (06/26/14)

Increased numbers of diamondback moth larvae are being found in canola fields in McLean County near Roseglen, and Mountrail County near Parshall.

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ent.knodel.aster.leafhoppers.

Aster Leafhoppers Low (06/26/14)

Aster leafhoppers were detected in only 29% of the canola field surveyed from June 16-20 and continue to be at very low densities (0 to 25 leafhoppers per 9 sweeps) in canola in North Dakota and Minnesota.

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ent.knodel.alfalfa.weevil.pub

Alfalfa Weevil Update (06/26/14)

Most of the alfalfa is being cut or has been cut in the southeast region of North Dakota, and has escaped major defoliation from alfalfa weevil feeding.

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