Tamra Jackson-Ziems, Extension Plant Pathologist

Tamra Jackson-Ziems

Faculty Bio

Twitter: @tjcksn
YouTube: Corn Disease Videos at UNL CropWatch
Website: Corn Disease section of CropWatch Plant Disease Management

Figure 1. The degree of damage from standing water in this field will depend on several factors and likely will lead to direct yield losses or indirect losses from increased disease pressure.
Figure 1. The degree of damage from standing water in this field will depend on several factors and likely will lead to direct yield losses or indirect losses from increased disease pressure.

Response of Germinating and Early Season Soybeans to Flooding May 30, 2019

Injury to germinating and seedling soybean from flooding depends on several factors, including soybean growth stage, flood duration, and air and soil temperature and varies the varieties. Pythium and Phytophthora are two diseases to scout for after flooding.

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Corn seedling exhibiting disease symptoms

New CW Podcast on Corn Seedling Diseases May 8, 2019

Michael Sindelar talks with Extension Plant Pathologist Tamra Jackson-Ziems about common corn seedling diseases, what to watch for in the field, and how to collect and submit quality samples for diagnosis.

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Soybean root lesion

New CW Podcast on Soybean Seedling Diseases April 26, 2019

Tune in to this CropWatch podcast on seed and early season issues with soybean diseases. Is your seed selection or treatment well matched with historical problems in the field? What should you be watching for at emergence and what are your management options.

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Soybeans with purple seed stain (left) and soybeans showing signs of seed decay due to Phomopsis disease complex. (Photo by Jenny Rees)
Figure 1. Soybeans with purple seed stain (left) and soybeans showing signs of seed decay due to Phomopsis disease complex. (Photo by Jenny Rees)

Soybean Seed Germination Concerns February 13, 2019

Average germination rates of new crop soybean being tested by the Nebraska Crop Improvement Association are lower than in recent years. Growers are urged to check the germination rate for their soybean seed and adjust planting rate and use of fungicide treatments accordingly.

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Goss's Wilt of corn

Nebraska Plant Pathology: A Culture of New Diseases January 23, 2019

Though relatively small, UNL's Department of Plant Pathology has played a significant role in the discovery of many economically important plant diseases, including most recently, a new fungal pathogen causing Fusarium head blight of wheat. This article is from the 2019 Nebraska Crop Management Conference Proceedings.

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Soybean Disease Update January 11, 2019

In 2018 an array of weather conditions led to the development of several soybean diseases. Excessive early season moisture and heavy rains during the season resulted in many fields being impacted by Phytophthora root and stem rot. Frogeye leaf spot developed early in some areas and continues to build in the state with more fields being affected.

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Map of bacterial leaf streak distribution in Nebraska

Corn Disease Update January 9, 2019

The 2018 crop season got off to a slow start with cold, wet conditions delaying planting in much of the state. Some seedling diseases developed in early planted corn, but with ample heat units the corn caught up quickly and most of the crop finished ahead of schedule. High relative humidity and rainfall drove the development of several leaf diseases mid-season.

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What’s New in Plant Pathology January 9, 2019

This article, from the Proceedings of the 2019 Crop Production Clinics, addresses new and updated product labels for disease management, a report from the Plant and Pest Diagnostic Clinic, changes in the Department of Plant Pathology, and the initial US finding of Fusarium boothii on wheat in Nebraska.

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