Soybean Disease

White mold in soybean

White Mold More Common This Year in Soybean

August 24, 2017
The increased levels of white mold that growers are finding in soybean this year are likely due to cool wet conditions at bloom, when the initial infection actually occurred.

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Sudden deaht syndrome in soybean
Sudden death syndrome in soybean

Sudden Death Syndrome Starting to Show up in Soybeans

August 16, 2017
Sudden death syndrome often appears in small patches of a field and can be confused with injury from brown stem rot. This story and two field videos examine SDS symptoms and how to differentiate it from other diseases. Once confirmed in a field, management begins with seed selection for the next crop.

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soybean stem canker

Soybean Stem Canker Uncommon, but Found in Southeast Nebraska

August 10, 2017
Nebraska Extension Plant Pathologist Loren Giesler shares a short field video on identifying soybean stem canker.

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Charcoal rot in soybean

Charcoal Rot: A Hidden Threat to Soybean Yield

July 27, 2017
The persistent hot weather this growing season may be conducive to the development of charcoal rot disease in soybean and scouting is urged. Although charcoal rot is most severe in hot dry conditions, it can also cause losses when ample moisture is present, making it a hidden threat to yield.

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Frogeye leaf spot

Frogeye Leaf Spot in Soybeans in Eastern Nebraska

July 27, 2017
Frogeye leaf spot is occurring in Nebraska soybeans, particularly in the eastern third of the state. While some fields have minor levels, some have significant levels and a fungicide treatment may be needed.

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Wilted, stunted phytophthora
Figure 1. Wilted and stunted soybean plant due to phytophthora in an otherwise healthy field. (Photo taken in Hall County by Sarah Schlund)

Phytophthora Root and Stem Rot Developing in Soybeans

July 27, 2017
As conditions heated up the last two weeks, the fungus causing phytophthora root and stem rot became active in irrigated fields and those fields that received significant rain over the past couple weeks. Growers are encouraged to scout for this disease and, if found, manage through seed selection and treatment for the next crop.

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Plant & Pest Diagnostic Clinic Report (June 14)

June 15, 2017

The following diseases were reported in samples submitted to the UNL Plant and Pest Diagnostic Lab June 1 to June 14.

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Phytophthora root and stem rot

Conditions Favor Early Season Soybean Diseases Again This Year

June 6, 2017
Cool, wet conditions in May may be contributing to soybean seedling injury from disease. Scouting is recommended to identify diseases and differentiate injury from that caused by herbicides when determining potential stand loss.

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