Plant Disease

Closeup of black spots on corn leaf
Figure 1. Tar spot black stromata develop on the upper leaf first then become visible underneath too. Over time, the spots increase in size and elongate. (Photos by Tamra Jackson-Ziems)

Corn Diseases Developing in Some Fields — What To Watch

July 12, 2024
Tar spot has been confirmed in several eastern Nebraska counties in recent weeks, and distribution of the fungus is expected to continue expansion this year.

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Soybean gall midge larvae on plant stem

Insect Pest and Plant Diseases in Soybean: A Nebraska Soybean Board-funded Project

July 10, 2024
In a new study, UNL researchers are using unconventional treatments on soybean insects and diseases to investigate the relationships between certain pests and how their interactions impact crop yield.

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This Week on N Field: Disease Concerns After Hail Damage

July 27, 2023
Hail damage can wound plants, but will this damage increase the amount of disease you will see in the field? Nebraska Extension specialists share insights on whether a fungicide could benefit your damaged crop.

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phytophthora symptoms on soybean plant

Field Conditions Shift to Favor Soybean Phytophthora Stem and Root Rot

July 20, 2023
Dry conditions early limited many seedling diseases. But with moisture increasing across the state in the last few weeks, PRSR is beginning to show up on farms.  

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FarmBits Podcast: Predicting Spores

March 31, 2023
In the latest episode, FarmBits chats with Carlos Pizolotto, a Brazilian plant pathologist who is researching predictive models to prevent and control disease outbreaks in agriculture.

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Cercospora leaf spot

A Plant Disease Changes Sugarbeet Production in Nebraska

March 29, 2023
A review of the impacts cercospora leaf spot has had on sugarbeet production in Nebraska since the early 1900s.

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Crown rot in stem

Crown and Stalk Rot Sampling Tips

August 26, 2021
As you continue to scout fields late in the season, it is important to collect the right kind of sample to ensure proper diagnosis.

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SDS foliar symptoms

Triazole Phytotoxicity in Soybeans

August 26, 2021
Soybeans across Nebraska are currently presenting symptoms common with Sudden Death Syndrome and Brown Stem Rot; however, recent samples indicate many of the affected fields are experiencing phytotoxicity due to the application of a triazole (DMI) fungicide.

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