Kyle Broderick - Extension Educator and Coordinator of the UNL Plant and Pest Diagnostic Clinic

Kyle Broderick

faculty

Asst Exten Educator Plant Pathology University of Nebraska–Lincoln

Work Plant Sciences Hall (PLSH) 448

Lincoln NE 68583-0722

Work 402-472-2559 On campus, dial 2-2559

kbroderick2@unl.edu

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Phytophthora Root and Stem Rot is Appearing in Nebraska Soybean Fields

July 21, 2022

Disease development will be most rapid in low areas of the field that are poorly drained or where compacted soils are present, but can occur in well-drained fields during periods of excessive moisture.

Alfalfa field — Proper seed selection is the first line of defense for disease management of Phytophthora root rot and anthracnose, which can cause significant losses in a short amount of time.

Alfalfa Seed Selection to Help Manage Diseases

April 6, 2022

As you think about selecting alfalfa varieties to plant this year, be sure to consider varieties available with greater resistance to diseases like anthracnose and Phytophthora root rot.

Tar spot on corn — More severe tar spot pictured in western Iowa in October 2019.

Tar Spot Disease of Corn Confirmed in Several Nebraska Counties

October 21, 2021

Tar spot was confirmed in seven eastern Nebraska counties during recent weeks, and there are likely additional corn fields in other counties where the disease can be found.

Example of stunting and yellowing in soybeans — Figure 1. SCN does not often cause visible symptoms in soybeans. When population densities of SCN are high, you may notice stunting and yellowing (pictured here) in patches in some soybean fields.

Sample for Soybean Cyst Nematode This Fall

September 28, 2021

It is a busy time of year as harvest begins across the state, but this is the perfect time to collect soil samples for soybean cyst nematode while waiting in the field in a grain cart or truck as the combine fills.

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.