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West Nile Virus Update: Sept. 17, 2021
The South Dakota Department of Health's latest update indicated that West-Nile-virus-positive mosquitoes were detected in Beadle, Brookings, Brown, Codington, Hand, Hughes, Lincoln and Minnehaha counties in South Dakota.
Prussic Acid Precautions
During periods of drought, it is important to aware of the factors that can be a concern during these conditions, specifically nitrates and prussic acid. It is important to take precautions when using feeds that could contain one or both compounds.
Wheat Streak Mosaic of Wheat
Fact sheet about symptoms, disease cycle, risk factors and management of Wheat streak mosaic disease
Oat Crown Rust Risk Low This Year
Oat fields recently scouted were found with very low levels of crown rust. This is primarily due to warm and dry weather conditions that we are currently experiencing.
West Nile Virus Update: Aug. 2, 2021
As of Aug. 2, 2021, the South Dakota Department of Health indicated that West-Nile-virus-positive mosquitoes were detected in Brookings, Codington, Hughes, Lincoln and Brown counties in South Dakota.
What Is Causing Soybeans to Yellow at This Time?
Recently scouted soybean fields were observed with yellowing plants, and one field was found to have plants dying prematurely. Learn some of the factors that may cause soybean plants to yellow at this time in the growing season.
Bacterial Blight Developing In Some Soybean Fields
Bacterial blight was found developing in a few soybean fields scouted the week of July 19. Leaf tattering is a common symptom of bacterial blight and happens when expanding bacterial blight lesions coalesce and form large brown patches.
Sooty Mold: A Saprophytic Fungi Observed in Wheat
While out crop scouting, sooty mold was observed in some South Dakota wheat fields. Sooty mold is a saprophyte, which can be easily mistaken for a disease caused by plant pathogens.
Monitor Soybean for Bean Leaf Beetle Activity
Some of the bean leaf beetles we are currently observing in South Dakota may make up the population of overwintering adults. While these adults are in soybean, they can cause significant amounts of defoliation to the leaves.
Leaf Scorch and Sunscald in the Garden
Long stretches of hot, dry weather will upset the growing habits of all plants and will lead to some unusual symptoms on leaves and produce in the garden. July and August are a prime time to watch for leaf scorch and sunscald.