Soybean Disease

Soybean Disease Update

January 8, 2018
Information on four early season soybean seedling diseases, including occurrence, symptoms, and management. An article from the Proceedings of the 2018 Nebraska Extension Crop Production Clinics.

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Fungicides are for Fungi

January 8, 2018
Symptoms of bacterial diseases can be easily confused with those of fungal diseases in field crops. This article, from the Proceedings of the 2018 Nebraska Extension Crop Production Clinics, reviews some of the common mistakes made in the major field crops and reviews research on the impact of fungicide use after hail events in corn and soybean.

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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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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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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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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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