Tony Adesemoye - Former Extension Plant Pathologist

Dr. Adesemoye is no longer at the University of Nebraska-Lincoln. When here, his lab focused on soil-borne pathogens and integration of biological control with other plant disease management methods.

Sudden death syndrome on a soybean plant

Root Disease Update January 11, 2019

The cool weather during spring 2018 delayed planting and was conducive to root and soilborne pathogens. Root diseases, including those caused by Fusarium and Rhizoctonia species were prevalent in many fields, causing damping off, stunting of seedlings, root rot, seedling blight, poor seedling vigor, and poor stand establishment.

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Advanced sudden death syndrome in soybean

Soybean Sudden Death Syndrome in West Central Nebraska August 24, 2018

Sudden Death Syndrome (SDS) was found in soybean near Sutherland in west central Nebraska last Friday. While uncommon in the area, moist conditions earlier in the year would have been favorable for its development.

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Soybean seedling with disease injury

Soilborne and Early Seedling Pathogens and Delayed Planting in Corn and Soybean May 3, 2018

Soilborne pathogens and early seedling diseases may be more frequent in corn and soybean this year due to cool weather conditions this spring and delayed planting.

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Rhizoctonia solani in soybeans. Links to full article.

Root and Soilborne Diseases Update January 8, 2018

Surveys made in 2017 revealed widespread soilborne diseases in many crop hosts and many field locations in the state. This update is provided on four soilborne pathogens: Rhizoctonia, Fusarium, Phytophthora, and Cephalosporium. An article of the 2018 Nebraska Crop Production Clinic Proceedings.

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Wheat streak mosaic virus in wheat
Severe wheat streak mosaic virus in a wheat field in Deuel County on May 15, 2017. (Photo by Stephen Wegulo)

Why Control of Volunteer Wheat is Critical to Protecting 2018 Yields July 13, 2017

Timely control of volunteer wheat and other weeds is key to managing yield loss risk in your 2018 crop. Yield-limiting risk factors affected by weed control include wheat streak mosaic and other diseases, insects (wheat stem sawfly and disease vectors), moisture loss, and increased weed seed production.

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Wheat exhibiting yellow streak of cephalosoprium leaf stripe
Cephalosporium stripe symptoms on wheat leaves with prominent yellow color. (Photos taken in North Platte on May 25, 2017)

Cephalosporium Leaf Stripe Developing in West Central Wheat May 25, 2017

Cephalosporium stripe, caused by a soilborne pathogen, is developing in wheat in west central Nebraska and may reduce yields if severe.

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Field pea

Field Pea Seeding Rates, Seeding Depth, and Inoculant March 13, 2017

Grain-type field peas are a cool season grain crop grown as an alternative for no-till summer fallow in a semiarid cereal-based cropping systems such as wheat-corn-fallow and/or wheat-fallow. They are typically planted in mid-March and harvested late-July. This article reports on research conducted on seeding practices and offers recommendations for producers on the economically optimal seeding rate, seeding depth, and inoculant to grow field peas in western Nebraska.

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field pea comparison
Figure 1. Comparison of water use of two systems -- summer fallow and field peas -- between March 27 and July 20. (Photos by Stranhinja Stepanovic)

Field Pea Production: Rotational Costs and Benefits March 10, 2017

Research findings show benefits in soil nutrient cycling, water infiltration, and microbial activity from replacing fallow with grain-type field peas in a wheat-fallow rotation in western Nebraska.

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