Content by Connie Strunk

A young man driving a soil sampling tool into a soybean field

Consider SCN Sampling This Spring

Soybean cyst nematode management starts with a soil test to determine the presence or absence of this nematode in the soil.

A soybean root with several small white cysts growing on it.

Scout and Soil Test for the Soybean Cyst Nematode

Soybean cyst nematode (SCN) is the main soybean production constraint in South Dakota. Soybean plants can be infested with SCN but may not display visible symptoms.

Soybean Pests: Bean Leaf Beetles and Bean Pod Mottle Virus

With the number of bean leaf beetle observations in soybean fields during 2016, the need for monitoring soybean for Bean pod mottle virus (BPMV) development increases. Bean pod mottle virus was first identified in South Dakota in 1998, and is recognized as a very economically important disease in soybean due to the potential for it to cause devastating losses to soybean yields.

A group of white, transparent, and orange colored larva on a soybean stem

Gall Midge Larvae in Soybean Stems

Gall midge larvae were observed recently in soybean stems from a field in South Dakota. These insects were found under the epidermis of the stem that was slightly above the soil line.

A yellowing soybean plant with brown spots on the leaves.

Soybean Diseases Update

A few soybean fields scouted had between low to moderate levels of brown spot (also known as Septoria leaf spot). Soybean planted into soybean stubble had elevated levels of brown spot.

A soybean field with green soybeans and patchy yellow areas.

Yellow Soybeans

Yellow soybean areas within fields are being noticed in some areas of the state. There are six factors which could be causing the soybean plant yellowing: nitrogen (N), potassium (K), or sulfur (S) deficiency, iron deficiency chlorosis (IDC), soybean cyst nematode (SCN), or yellow flash from Roundup application.

Wheat heads with extreme white-yellow bleaching.

Updated National Fusarium Head Blight (Scab) Prediction Center

The new Fusarium (Scab) Head Blight Prediction Center is now up and running. The purpose of this Assessment Tool is to provide producers and crop consultants with a Fusarium Head Blight (FHB/scab) risk assessment tool which leads up to and includes flowering (anthesis).

A side-by-side comparison of two oat varietes. The one on the right has crown rust developing on it.

Utilize a Fungicide For Crown Rust Prevention in Oats

If you are growing oats this year for grain, be sure to scout and plan a fungicide application to protect the oats from crown rust.