Plant and Pest Diagnostic Clinic

SDS foliar symptoms

Triazole Phytotoxicity in Soybeans

August 26, 2021
Soybeans across Nebraska are currently presenting symptoms common with Sudden Death Syndrome and Brown Stem Rot; however, recent samples indicate many of the affected fields are experiencing phytotoxicity due to the application of a triazole (DMI) fungicide.

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Crown rot in stem

Crown and Stalk Rot Sampling Tips

August 26, 2021
As you continue to scout fields late in the season, it is important to collect the right kind of sample to ensure proper diagnosis.

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Rhizoctonia root rot of soybeans
Photo 1. Rhizoctonia root rot of soybeans. Lesions near the soil line tend to be sunken and dry.

Disease Reports from the UNL Diagnostic Clinic — June 30

July 1, 2021
Several diseases were reported in samples submitted to the UNL Plant and Pest Diagnostic Clinic from June 15 through June 30, 2021.

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Stripe rust in a field
Figure 1. Stripe rust in a state variety trial at the Eastern Nebraska Research and Extension Center (ENREC) near Mead, Sauders County, on June 2.

Wheat Disease Update: Stripe Rust, Leaf Rust, and Fusarium Head Blight

June 4, 2021
Leaf rust
Figure 2. Leaf rust in a research plot at Havelock Farm in Lincoln, Lancaster County, on June 1.

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Flooded wheat field
Figure 1. A flooded section of a grower’s wheat field in excellent condition in Deuel County on May 25.

Wheat Disease Update

May 27, 2021
Stripe rust and leaf rust confirmed in new counties; Fusarium head blight risk reported as moderate to high in southern Nebraska.

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Stripe rust
Figure 1: Stripe rust (Photo by Nathan Mueller)

Track Stripe and Leaf Rust in Winter Wheat Across Nebraska

April 29, 2021
Producers are encouraged to report wheat stripe and leaf rust sightings again this year to help Nebraska Extension continue monitoring movement of these crop diseases throughout the state.

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Plant disease photo collage

Sample Testing Underway at Plant and Pest Diagnostic Clinic

April 22, 2021
With operations resuming in full at the Plant & Pest Diagnostic Lab this spring, growers have several options for submitting weed, insect and plant disease samples for testing in Nebraska.

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Soybean root with SCN infection

Managing Soybean Cyst Nematode Starts Now

March 17, 2021
Preparing for the annual battle against soybean cyst nematode? Extension experts weigh in on your strategy options and offer tips on how to start winning the war.

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