Crop & Pest Report

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Plant Pathology

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2017 Corn Disease Survey

Over 100 corn fields were scouted in the past month to document the prevalence of foliar diseases in corn.

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Sunflower Stem Diseases (09/14/17)

A visit to sunflower fields at this time of year can provide information on what disease(s) you might face in future years. This is particularly true with stem diseases.

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Soybean Cyst Nematode Sampling – Q and A (09/14/17)

We encourage soybean and dry bean growers to sample for soybean cyst nematode. Below are some commonly asked questions and answers.

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SCN Sampling (08/31/17)

When to sample, where to sample, how to sample and more answered.

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2017 Soybean Cyst Nematode Sampling Program (08/31/17)

The NDSU Extension Service and the North Dakota Soybean Council are working together again to coordinate a soybean cyst nematode (SCN) soil testing program. A total of 2,000 SCN soil test bags will be available to growers on a first come first serve basis.

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What is Soybean Cyst Nematode (SCN) and Why is it Important? (08/31/17)

Soybean cyst nematode (SCN) is a microscopic and parasitic worm (scientific name is Heterodera glycines). It is the most destructive pathogen of soybeans in North America and yield loss estimates from SCN have been measured between $100s of millions to over $1 billion annually.

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What Disease is on my Soybean Leaves? (08/17/17)

In the last few weeks, we have had many questions about leaf diseases impacting soybeans.

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Growers Successfully Managing Cercospora Leaf Spot Control in Sugarbeet (08/17/17)

Growers are working around the clock utilizing ground rigs in dry weather conditions and amply supported by aerial applicators to apply fungicides in a timely manner to manage Cercospora leaf spot (CLS) in sugarbeet.

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Reports of Goss’ Leaf Blight (Wilt) on Corn (8/03/17)

Areas of the state have received high winds, hail and rain, thus elevating the risk for the development of Goss’ wilt in corn.

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Cercospora Leaf Spot Control in Sugarbeet (8/03/17)

The fungal pathogen, Cercospora beticola causes Cercospora leaf spot (CLS) in sugarbeet. CLS is the most destructive foliar disease of sugarbeet in North Dakota and Minnesota.

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Bacterial Blight Appearing in Soybeans (8/03/17)

I have been receiving some questions about foliar lesions in soybeans.

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Rust on Dry Beans Being Found in North Dakota and Minnesota (07/27/17)

We have received multiple reports and photographs of common rust occuring on dry beans. In much of the dry bean production regions conditions have been very favorable for the development of rust (warm temperatures and mornings with dew) and will likely be favorable into the future.

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Disease Risk in Hail Damaged Corn (07/20/17)

Several corn fields in the last two weeks have experienced significant hail damage. With this added injury, questions have been asked on disease risk in corn.

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Expectations of Fungicides Applied to Wheat at Flowering under Dry Conditions (07/13/17)

Severe Fusarium head blight problems over the past couple growing seasons have plagued durum and spring wheat growers in northcentral and northwestern North Dakota.

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NDSU Canola Doctor App (07/13/17)

The NDSU Canola Doctor App (Figure 1) delivers critical information on diseases and pests, including alerts, the Sclerotinia risk map and risk calculator, images and management tools to optimize canola production in North Dakota.

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Managing Bacterial Blight in Dry Beans (07/13/17)

Recent thunderstorms in Northeast ND and Northwest MN have created a favorable environment for bacterial blight in dry beans.

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White Mold Review (07/13/17)

While much of the state is experiencing a drought, some locations in the North have had adequate water where white mold may be a concern in broadleaf crops.

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Questions when Managing Cercospora Leaf Spot (CLS) of Sugarbeet (07/06/17)

Can I mix different fungicides? Can adjuvants/stickers help improve efficacy of fungicides? When should I start fungicide application? How much water should I use and at what and pressure? At what temperature does Cercospora become less damaging?

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Fusarium Head Blight (Scab) Risk (07/06/17)

A moderate scab risk exists for areas along the northern half of the Red River Valley

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Scout Sugarbeet Fields to Check for Presence of Fusarium Yellows and Fusarium decline (6/29/17)

Fusarium yellows/Fusarium decline were first observed in May at the NDSU research site in Moorhead, MN.

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