Crop & Pest Report


Plant Pathology

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Field Pea Diseases Review: Powdery Mildew: (06/02/16)

Powdery mildew can be a very important disease when conditions are favorable. It reduces seed size and can sharply reduce yields if it develops during early to mid-pod development.

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Field Pea Diseases Review: Ascochyta /Mycosphaerella Blight: (06/02/16)

Ascochyta/Mycosphaerella blight can be an economically important disease when cool, wet weather occurs during bloom and pod-fill.

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Managing Rhizoctonia Root Rot of Sugarbeet (06/02/16)

The fungus Rhizoctonia solani causes Rhizoctonia damping-off, crown and root rot of sugarbeet in North Dakota and Minnesota.

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Disease Forecasting Models for Small Grains Available (05/26/16)

The development of wheat fungal leaf diseases (tan spot, Septoria, leaf rust) can be assessed using the NDSU Small Grain Disease Forecasting Model.

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Stripe Rust Found in North Dakota (05/26/16)

On May 23rd, stripe rust was confirmed in winter wheat research plots in Cass County (found by Matt Breiland, Research Specialist) and Adams County (found by John Rickertson, Research Agronomist, Hettinger REC).

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Managing Early Season Fungal and Fungal-like Diseases of Sugarbeet (05/26/16)

The most common early season diseases are damping-off which may be caused by Pythium, Rhizoctonia and Aphanomyces.

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Early-season Fungicide Applications in Wheat (05/19/16)

Winter wheat and spring wheat are approaching (or have approached) the growth stage when producers will consider tank mixing a fungicide with a herbicide for management of early-season fungal leaf spots (tan spot, Septoria leaf spot) and weeds.

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Pea Seed-borne Mosaic Virus Detected in One Seed Lot from Mountrail County (05/19/16)

Pea Seed-borne Mosaic Virus (PSbMV) is a viral disease that can cause substantial yield and quality losses in lentils and peas and can also infect chickpeas, faba beans and vetches.

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Timely Detection of Blackleg of Canola is Key to Managing It with Fungicides (05/12/16)

The fungus that causes blackleg can survive on canola residues for two to three years and is capable of releasing spores during that period.

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Plant Population for Highest Sugarbeet Yield and Quality (05/12/16)

Researchers at North Dakota State University and the University of Minnesota have demonstrated that a wide range of plant population with uniformly spaced plants resulted in high yield and recoverable sucrose, but plant populations of 175 to 200 plants per 100 foot of 22-inch wide rows consistently resulted in the maximum recoverable sucrose per acre. It is critical that the plants be evenly spaced within the rows.

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New Features for NDSU Extension Pest Management App (05/05/16)

The NDSU Extension Pest Management App (which houses information from the Plant Disease Management Guide, Insect Control Guide and Weed Control Guide) has recently been updated with new features.

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Additions to the 2016 North Dakota Field Crop Plant Disease Management Guide (Fungicide Guide) (05/05/16)

Each year the NDSU Extension Plant Pathology team receives information to update the fungicide guide and the table below highlights the recent additions of recently labeled of combinations of active ingredients.

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NDSU Potato Blightline to Operate in 2016 (05/05/16)

The Plant Pathology Department at North Dakota State University will again be providing the potato Blightline service at no charge to the potato industry of North Dakota and western Minnesota in 2016.

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Estimated Sugarbeet Acreage for 2016 (05/05/16)

It is estimated that the US will plant 1.159 million acres of sugarbeet in 2016. American Crystal Sugar Company will plant just over 400,000 acres, Minn-Dak will plant 115,000 acres, and Southern Minnesota Beet Sugar Cooperative will plant about 119,000 acres.

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IPM Survey – Wheat and Sunflower Disease Summary of 2015 (09/10/15)

There were several diseases detected in wheat and sunflower this year. Some diseases were found consistently throughout the state, while other diseases were more localized to a particular region. Regardless, the timely information obtained by the scouts is critical in updating growers and agricultural professionals throughout the state. Below is a summary of the disease data from the 2015 growing season for wheat and sunflowers.

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Late Season Soybean Stem Diseases (09/10/15)

We are seeing several late-season stem diseases show up in North Dakota; notably, brown stem rot and charcoal rot. As a result, I am reprinting this article from last year.

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Thinking about Sampling for SCN? (09/10/15)

Soybean cyst nematode can cause 15-30% yield loss before any above ground symptoms appear and we know that it is spreading in North Dakota. Whether or not you take advantage of the North Dakota Soybean Council sampling program, we encourage soybean growers to sample for SCN.

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2015 Soybean Cyst Nematode Sampling Program (09/10/15)

The NDSU Extension Service and the North Dakota Soybean Council are working together to coordinate a SCN soil testing reimbursement program again in 2015.

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Protect Your Investments from Cercospora Leaf Spot (09/10/15)

Although we have had a warm and relatively wet July and August, Cercospora leaf spot was not a major problem in most production areas early in the season up to mid-August.

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Scout for Goss’s Wilt and Leaf Blight in Corn (08/13/15)

Over the past two weeks, areas of the state have encountered rain events with high winds and hail. The wind and hail has caused leaf and stem injury in the crops and increases the risk of bacterial disease development.

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