Tamra Jackson-Ziems, Extension Plant Pathologist

Tamra Jackson-Ziems

faculty
Work Plant Sciences Hall (PLSH) 406
Lincoln NE 68583-0722
US
Work 402-472-2559 On campus, dial 2-2559
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Tamra Jackson-Ziems, Extension Specialist and Professor, joined the faculty of the Department of Plant Pathology at the University of Nebraska-Lincoln (UNL) in April 2005 after completing her graduate degrees at the University of Arkansas and University of Illinois-Urbana. Her appointment is split between extension, research, and teaching 80/10/10%, respectively, with statewide responsibility for diseases of corn and grain sorghum. Her extension activities encompass educating clientele about disease identification, prevention, and management. And her research projects encompass a broad range of topics, including bacterial leaf streak, Goss’s bacterial wilt and blight, use of fungicides for disease control, and plant parasitic nematodes of corn. During her time at UNL, she has delivered more than 180 invited presentations in 16 states and is the 2016 recipient of both the Nebraska Cooperative Extension Association’s Award for Outstanding Creative Programming (for an individual) and the Nebraska Ag Business Association’s Education and Research Person of 2016 Award.

icon-academic-capEducation

  • Ph D, University of Illinois-Urbana, 2005
  • MS, University of Arkansas, 2000
  • BS, University of Central Arkansas, 1996

icon-bookmark-starAwards & Honors

  • Outstanding Education and Research Person of 2016, Nebraska Ag Business Association, 2016
  • Outstanding Award For Creative Programming (Individual) for "Bacterial Leaf Streak of Corn", Nebraska Cooperative Extension Association, 2016
  • Dinsdale Family Faculty Award, IANR, 2009
  • Distinguished New Extension Employee Award , UNL Extension, 2009

Faculty Bio

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

Bacterial stalk rot in corn

Diseases to Watch for in Flooded Crops

July 11, 2019
Producers, consultants, and agronomists should be alert to the potential for increased disease pressure in fields that experienced flooding in March or more recently. Here are some of the diseases you're most likely to see.

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Bacterial leaf streak on corn

Bacterial Leaf Streak of Corn in Nebraska

June 27, 2019
Bacterial leaf streak of corn is increasing as Nebraska. When scouting, growers should take time to differentiate it from gray leaf spot as fungicides will not work on bacterial leaf streak but will help control gray leaf spot.

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Illustration of injury symptoms in a field. It is one of several indicators used to diagnose whether injury is caused by a disease, chemical application, or agronomic practice. This field shows random, non-uniform distribution common with diseases.
Illustration of injury symptoms in a field. It is one of several indicators used to diagnose whether injury is caused by a disease, chemical application, or agronomic practice. This field shows random, non-uniform distribution common with diseases.

Using Symptom Distribution to Identify Problems and Guide Management

June 24, 2019
Many factors can cause the emergence issues growers have been seeing in some corn and soybean fields. One of the easiest ways to predict whether the emergence issues are due to a soilborne pathogen(s) or agronomic factors is to look at where symptoms appear in the field.

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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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