Plant Disease

Nebraska map of PPDC reporting districts

Crop Diseases Confirmed by PPDC Sept. 27-Oct. 5 October 6, 2017

Anthracnose in corn and soybeans was among the diseases diagnosed by the university's Plant and Pest Diagnostic Clinic in the last two weeks. See their report for soybean, corn, hops, and alfalfa. Clinic services will be reduced Oct. 12-19.

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New Extension Crop Publications August 17, 2017

Among new releases from Nebraska Extension are two on the use of biologicals to manage crop disease as part of an integrated pest management (IPM) plan.

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Has Ergot Altered Events in World History? August 17, 2017

One of the few plant diseases that can also cause direct damage to humans, ergot, particularly in rye grain, may have been a factor in several world events..

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SCN Sample graphic

Improving Soybean Profitability: SCN March 3, 2017

The easiest and least expensive way to improve profitability for many soybean growers in tight economic times, or any time, is to sample fields for soybean cyst nematodes (SCN). In Nebraska trials growers realized an average six-bushel-per-acre soybean yield increase after taking no-cost steps to manage SCN.

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Soybean roots with smaller soybean cyst nematode (SCN) cysts (red arrows) and larger nitrogen nodules (blue arrows).
Soybean roots with smaller soybean cyst nematode (SCN) cysts (red arrows) and larger nitrogen nodules (blue arrows).

SCN Scouting Recommendation Changes; SCN Resistance Possible July 8, 2016

Mid-summer is an effective time to scout for soybean cyst nematode (SCN) using either the visual or soil test method. This story describes both methods. If SCN is identified, a follow-up soil test approximately six years later can help assess effectiveness of treatment efforts as well as identify SCN resistance.

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Soybean seedling damage
Soybean seedling damage

Herbicide Injury and Pathogen Infection on Soybean Seedlings June 17, 2016

In an ongoing survey for soilborne pathogens in soybeans, closer examination of soybean seedling injury in a Keith County field found several causes, including herbicide injury and damping off from Fusarium or Rhizoctonia root rot.

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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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