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What Does the Loss of Chlorpyrifos Mean for Farmers? (09/23/21)

How widespread, insects controlled, options for farmers, how does this change how farmers manage insect?

2021 IPM Crop Survey- Soybean and Sunflower (09/23/21)

NDSU IPM scouts surveyed a total of 539 soybean fields and 299 sunflower fields in North Dakota during 2021.

2021 IPM CROP Survey – Wheat and Barley (09/23/21)

The IPM (Integrated Pest Management) Crop Survey helps ND farmers, crop consultants, and ag audiences stay up-to-date on important diseases and insect pests of wheat, barley, soybean and sunflower grown in North Dakota.

Pyrethroid Complaints for Diamondback Moth Control in Canola (08/26/21)

Several farmers and crop consultants have complained about the lack of control of the diamondback moth (DBM) with pyrethroid insecticides in canola fields located mainly the northeast area (Walsh to Rolette Counties) of North Dakota.

EPA Announces Revocation of all Food Tolerances for Chlorpyrifos (08/26/21)

On August 18, 2021, the U.S. Environmental Protection Agency (EPA) announced that they were revoking the food tolerances for chlorpyrifos residues under the Federal Food, Drug, and Cosmetic Act (FFDCA).

IPM Crop Survey - Insect Update (08/12/21)

Frequent scouting is the key to early detection and making timely pest management decisions using Economic Thresholds (E.T.).

Corn Rootworm Trap Update (08/12/21)

Adult corn rootworms continue to emerge at low numbers, based on yellow sticky traps.

European Corn Borer Low (08/12/21)

European corn borer (ECB) moth flight is ending. ECB Z-race moths (univoltine) were detected at 3 of the 13 trap sites and ECB E-race (bivoltine) at 1 of the 13 trap sites last week.

Continue to Scout for Sunflower Insects (08/12/21)

Sunflower crop stages were in the R2 (bud

Cocoons of Parasitic Wasps (08/05/21)

These cocoons are ‘good’ beneficial insects or parasitic wasps in the insect family Braconidae.

Scout for Bean Leaf Beetles in Soybeans (08/05/21)

Increasing numbers of bean leaf beetles (BLB) have been observed recently in southeastern ND, especially south and west of Wahpeton.

Armyworm and Black Cutworm Trapping Network (08/05/21)

Trap catches for true armyworm and black cutworm continue to decline as wheat matures and is harvested.

Continue to Scout for Sunflower Insects (08/05/21)

Sunflower crop stages were in the R1 (terminal bud) to R5.7 (70% flowered) stages last week in scouted IPM fields or in fields with IPM traps.

IPM Crop Survey - Insect Update (08/05/21)

Soybean aphid, spider mite, and adult grasshoppers update.

European Corn Borer Continues to Decline (08/05/21)

European corn borer (ECB) moths continue to decline. ECB Z-race moths (univoltine) were detected at 9 of the 13 of trap sites and ECB E-race (bivoltine) at 3 of the 13 trap sites last week (Table 1 on page 3).

Adult Corn Rootworms Trap Update (08/05/21)

Adult corn rootworms continue to emerge at low numbers, based on yellow sticky trapping.

Scout for Diamondback Moth in Canola (08/05/21)

Diamondback moth adults and larvae have been observed at economic population levels in northeastern ND canola.

Scout for Red Sunflower Seed Weevil (07/29/21)

Red sunflower seed weevils (RSSW) are emerging in most areas of the state and scouting should start as sunflower starts to flower.

Adult Corn Rootworms Emerging (07/29/21)

The first emergence of adult northern corn rootworm (NCR) was observed last week in corn fields near Casselton, Cass County, and Shenford, Ransom County.

European Corn Borer Continues to Decline (07/29/21)

European corn borer (ECB) moths continue to decline. ECB Z-race moths (univoltine) were detected at 9 of the 13 of trap sites and ECB E-race (bivoltine) at 3 of the 13 trap sites last week (Table 1).

IPM Crop Survey - Insect Update (07/29/21)

Soybean aphid, Spider mites, Adult grasshoppers, and Sunflower insect trap update

Scout for Lygus Bug (07/29/21)

Hot dry weather favors the buildup of Lygus populations and increases the risk of damage to field crops like confection sunflowers and canola.

Scout for Spider Mites in Soybeans, Dry Beans and Corn (07/21/21)

The first reports of spider mites being found on field edges of soybeans came in this week from West Fargo, ND and Crookston, MN.

Flea Beetles Feeding on Canola Pods (07/21/21)

The summer population of flea beetles has emerged earlier due to warmer temperatures and are in large numbers.

Potato Leafhoppers in Dry Beans (07/21/21)

Populations of potato leafhoppers are increasing in dry edible beans in eastern North Dakota and in north central Minnesota, near Park Rapids.

Armyworm and Black Cutworm Trapping Network (07/21/21)

Trap catches for true armyworm and black cutworm are low at all trap sites last week. Good news for a change!

IPM Crop Survey - Insect Update (07/21/21)

Soybean aphid numbers continue to be low and aphids were observed in only 22% of the soybean fields scouted last week, mainly in MN. Grasshoppers are increasing and in mixed nymph-adult stages. Trap captures for banded sunflower moth and Arthuri sunflower moth increased this last week.

European Corn Borer Decreasing (07/21/21)

European corn borer (ECB) Z-race moths (univoltine) were detected at 9 of the 13 of trap sites and ECB E-race (bivoltine) at 3 of the 13 trap sites last week

Pea Leaf Weevil Emergence (05/27/21)

As we move into late May, pea leaf weevil (PLW) will likely begin emerging in western areas of North Dakota.

IPM Crop Survey - Insect Update (07/15/21)

Soybean aphid & Spider Mites

European Corn Borer Increasing (07/15/21)

European corn borer (ECB) Z-race moths (univoltine) were detected at 10 of the 13 of trap sites and ECB E-race (bivoltine) at 5 of the 13 trap sites last week.

Scout for Banded Sunflower Moth Eggs (07/15/21)

Based on pheromone trap catches, banded sunflower moth (BSM) and Arthuri sunflower moth (ASM) have emerged this last week.

Red-Headed Flea Beetle in Soybeans and Corn (07/15/21)

There have been several calls, emails, and texts about the red-headed flea beetle (Systena frontalis) causing defoliation in soybeans and in corn.

Armyworm and Black Cutworm Trapping Network (07/15/21)

Trap catches are summarized in Table 1.

Which Insecticide is Best for Grasshopper Control (07/15/21)

All stages of grasshoppers (1st instars to adults) can be observed in the field crops now.

Armyworm and Black Cutworm Trapping Network (07/08/21)

A pheromone trapping network for true armyworm and black cutworms was set-up in June in North Dakota.

Scout for European Corn Borer (07/08/21)

European corn borer (ECB) Z-race moths (univoltine) have started emerging in ND (Table 1).

IPM Crop Survey - Insect Update (07/08/21)

Cereal aphids, grasshoppers, soybean aphids, and spider mites observed in the IPM crop survey.

Scout Hay for Blister Beetles (07/01/21)

Several blister beetle species feed on alfalfa.

Collect Leafy Spurge Flea Beetles (07/01/21)

The accumulated growing degree days (AGDD) for sunflower (base of 44 F) are used as a guide to determine when to begin collecting for adult flea beetles.

Cereal Aphids on Wheat Heads (07/01/21)

Low numbers of English grain aphids, 30-50 aphids per head, are being observed on wheat heads in eastern ND.

European Corn Borer Trapping Network (07/01/21)

A trapping network is being monitored for the Z- and E-races of European corn borer in corn fields of ND. A modified Hartstack trap is being used for trapping ECB moths in grassy field ditches.

Soybean Gall Midge Update in North Dakota (06/24/21)

Soybean gall midge, Resseliella maxima, is a new insect pest, which has been confirmed from Minnesota, Nebraska, Iowa, South Dakota, and Missouri.

Leafy Spurge Flea Beetles (06/24/21)

Leafy spurge is flowering and land managers are interested in obtaining leafy spurge flea beetles (Aphthona species) for biocontrol of this noxious weed.

Dry Weather Decreases Risk for Wheat Midge in 2021 (06/24/21)

Wheat midge is an economic insect pest of hard red spring wheat and durum wheat in the northern tier of North Dakota.

Cereal Aphids in Wheat and Barley (06/10/21)

Low levels of cereal aphids (1 to 12% of stems infested) were found by the IPM scouts in 8% of the wheat fields scouted south of Hwy 2 in eastern ND.

Grasshopper Update (06/10/21)

IPM Scouts of ND and Minnesota found grasshopper nymphs in about half of the barley, wheat and soybean fields scouted last week.

Sugarbeet Root Maggot Update: Hot Weather Will Accelerate Fly Emergence (06/03/21)

Despite relatively low sugarbeet root maggot (SBRM) fly activity at this time, the anticipated streak of hot weather is likely to produce major surges in fly emergence and subsequent movement into beet fields in the next couple of days.

IPM Crop Survey Starts in ND and MN (06/03/21)

For the 2021 Integrated Pest Management (IPM) Crop Survey, six scouts and two insect trappers were hired in North Dakota and three scouts in Minnesota!

Cutworm Scouting (05/27/21)

The first report of cutworms was reported this week in barley in Slope County, southwestern ND (Ryan Buetow, DREC).

Continue to Scout for Canola Flea Beetle (05/27/21)

With warmer temperatures occurring in most of North Dakota, flea beetles will be more active in areas with emerged canola fields.
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