Plant Disease

Reporting districts
Reporting districts

UNL Plant and Pest Diagnostic Clinic June 15 Update

June 15, 2016
The UNL Plant and Pest Diagnostic Clinic lists the diseases they've found in the past two weeks in corn, soybean and wheat samples submitted from various districts in Nebraska.

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Corn nematode damage
Figure 1a. Severe sting nematode injury to corn. When sampling severely affected areas, collect samples from the edges of damaged areas in the field. That's where you'll find the most nematodes. (Photos by Tamra Jackson-Ziems)

Corn Nematodes: Scout Sandy Soils Now, Other Soils Any Time

June 7, 2016

This year nematode damage in some Nebraska fields may be masked by the ample rainfall we’ve received, but rest assured, these plant parasitic nematodes are still there in almost every field. Their impact ranges from no obvious sign to severe crop injury and tremendous yield loss.

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Inconsistent corn stand indicating possible seedling disease
Figure 1. Scout corn stands for intermittent gaps indicating missing or lost plants as well as diseased or dead plants.

Seedling Diseases Continue to Develop in Nebraska Corn

June 2, 2016
Following several weeks of rainy conditions, seedling diseases are becoming more apparent in corn. See what symptoms to look for when scouting fields.

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Wheat stripe rust
Figure 1. A flag leaf completely covered with stripe rust in a grower’s field in Nuckolls County on May 25.

Stripe Rust Increasing; Spray Your Wheat to Protect the Flag Leaf

June 2, 2016
Stripe rust has significantly increased in all wheat-growing areas in Nebraska. It is recommended that wheat be treated with a fungicide to protect the flag leaf. If the incidence (percentage of flag leaves diseased) or severity (percentage of the flag leaf area diseased) is less than 50%, spraying a fungicide will significantly reduce yield loss due to stripe rust.

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UNL Extension Plant Pathologist Bob Harveson with his book.
UNL Extension Plant Pathologist Bob Harveson with his book.

UNL Plant Pathologist's Book Offers Tales of Scientific Discovery

April 28, 2016
Does a reader need to be scientist — specifically, a plant pathologist — to appreciate a book about the history of discovering and treating plant diseases? Not if the reader appreciates history, science, and their broader lessons as conveyed through "The Bacterium of Many Colors" by Dr. Robert Harveson, UNL Plant Pathologist at the Panhandle Research and Extension Center.

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