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Cody Molnar

SDSU Extension Horticulture Plant Pathology Field Specialist

605-688-4792

Berg Agricultural Hall 259
Box 2207D
Brookings, SD 57007

Cody supports the citizens of South Dakota as an SDSU Extension Horticulture Plant Pathology Field Specialist at the South Dakota State University campus in Brookings.

State & Regional Offices

SDSU Campus
Also by Cody Molnar
Rhubarb plants with Ramularia Leaf spot and Ascochyta leaf spot.

Leaf Spot Diseases of Rhubarb in South Dakota

In South Dakota, rhubarb is generally hardy, but it can develop several diseases that, when left unmanaged, cause severe damage and decline of plants. Leaf spots caused by the fungi Ascochyta rhei and Ramularia rhei are the most-common diseases we observe.

Three blades of wheat grass exhibiting Alternaria symptoms.

Secondary Wheat Diseases: Alternaria Species Detected

In wheat observed this summer, the Alternaria species, a group of secondary fungal pathogens were identified in samples collected east of the Missouri river. This pathogen is infectious on its own and can cause Alternaria leaf spot disease.

a wilted pepper plant in a garden plot.

Handling Herbicide Injury in Specialty Crops

Learn how to handle specialty crops that have inadvertently been affected by herbicides.