Content by Connie Strunk
Volunteer Winter Rye Could Be a Source of Ergot in Your Wheat
A few wheat fields scouted this summer were found with volunteer rye infested with ergot. Volunteer rye, in addition to being a weed, can be a source of ergot, which is a concern for winter wheat producers.
Sudden Death Syndrome of Soybean
Fact sheet discussing sudden death syndrome of soybean.
Wheat Streak Mosaic Virus is Prevented Before Planting Winter Wheat
Wheat streak mosaic disease (WSMD) is one of the important diseases in winter wheat and can lead to severe yield losses.
Goss’s Bacterial Wilt and Blight Developing
While out scouting corn fields (the week of August 11, 2020) Goss’s bacterial wilt and blight was found starting to develop in a number of fields.
Bean Leaf Beetles Are Active in Soybean
We have received reports of bean leaf beetles feeding on soybean in a couple different areas of the state. Bean leaf beetles go through two generations each year in South Dakota. Adult bean leaf beetles can vary in color from brown, yellow and orange to red.
Crazy Top Disease Developing in Corn
Crazy top disease was observed in a few fields in the Southeast counties in the state. This disease develops in corn that is flooded or under full water saturation when corn has not reached the four-to-five leaf stage.
Southern Rust, Bacterial Leaf Streak, and Eyespot Are Developing in Corn
Southern rust was found in Yankton County, bacterial leaf streak was found in Brule County, and eyespot was found in several fields and counties the week of July 27, 2020.
Deciding on Fungicide Application to Manage Mid-Late Season Soybean Leaf Fungal Diseases
Soybean leaf diseases can develop in some soybean fields to reach yield-reducing levels. The question that growers often ask is whether it is profitable to apply a fungicide to soybeans at the R3/R4 growth stage in South Dakota.
Is a Fungicide Applied at Tasseling Profitable in Corn?
Corn is currently at tasseling/silking across the state. This is usually the growth stage when a fungicide is applied to control fungal diseases.
Start of Flowering Is the Ideal Time for White Mold Management in Soybeans
Some early planted soybeans are starting to flower (R1 growth stage). One soybean disease that needs to be managed at this growth stage is white mold.