Crop & Pest Report

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Plant Pathology

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Pea Disease Diagnostic Series Now Available (06/16/16)

A pocket-size 16-card diagnostic guide for pea diseases is now available on the NDSU website.

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Fusarium Head Blight (Scab) Update (06/09/16)

The moisture events across the state from last week have elevated scab risk for flowering wheat in northeastern and northcentral North Dakota.

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Stripe Rust Update and Reminder of Fungicide Timing (06/09/16)

Stripe rust incidence and severity have been increasing throughout several states in the upper Great Plains.

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Sclerotinia Risk Map for the 2016 Growing Season to Start on June 20th (06/09/16)

The first Sclerotinia risk map for the 2016 season will be available on June 20th, 2016 at three different websites.

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Fusarium Yellows of Sugarbeet Found at Research Site in Moorhead, Minnesota (06/09/16)

Fusarium yellows were first observed in late May and confirmed on June 6 at the NDSU and University of Minnesota research site in Moorhead, MN.

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Fusarium Head Blight (Scab) Risk in Winter Wheat (06/02/16)

Fusarium head blight (scab) risk season has begun in North Dakota as some of the winter wheat fields in the state have headed.

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Field Pea Diseases Review: Bacterial Blight and Brown Spot: (06/02/16)

Bacterial blight is generally not considered an economically important disease of field peas in North Dakota, but severe losses to the disease have been reported in neighboring states.

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Field Pea Diseases Review: White Mold/Sclerotinia: (06/02/16)

White mold is rarely a disease of economic importance in dryland field pea production but can be important in irrigated peas.

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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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