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A soybean field with plants yellowing and dropping leaves in larger portion of the field while the rest of the field has green soybean plants.

Drought Stress or Stem Canker Killing Soybean Plants?

Several soybean fields scouted in a number of Eastern counties have plants dying or dropping leaves prematurely. While the majority of these fields have drought stress causing early senescence, a few fields have also stem canker developing

Diseased sunflower head, showing sclerotia bodies that have replaced seeds.

Sclerotinia Concerns in Sunflower

Sclerotinia diseases are a concern in sunflowers, because the fungus can infect the plant through the root, mid-stalk or the head. Wet weather and cool temperatures two-to-three weeks prior to and during flowering favor disease development.

Three bean leaf beetles. From Left: Brown beetle with black spots on a green leaf. Yellow beetle with black spots on a green leaf. Red beetle with black spots on a green leaf.

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.

Green corn plant with abnormal tassel growth.

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.

Brown and white cow grazing on standing cornstalks

Considerations for Grazing Standing Corn

Grazing standing corn is a viable option to supply nutrients to livestock. However, mitigating risk is critical to ensure healthy animals and optimize crops.

several plots of alfalfa

Aphanomyces Root Rot of Alfalfa

Fact sheet on Aphanomyces Root Rot of Alfalfa

Scoops of ready-to-eat cookie dough in a white bowl.

How to Make a Safe, Ready-to-Eat Cookie Dough

Ready-to-eat cookie dough is a delicious snack or dessert that can be enjoyed, but only when made safely. This includes using commercially processed heat-treated flour, ready-to-eat ingredients and using good sanitary practices when making the cookie dough.

From left: Wheat plants killed by common root rot. Wheat plants with bleached heads due to Take-all disease. Bleached wheat heads due to stem maggot feeding.

Differentiating Between Wheat Head Diseases and Disorders

Several diseases and disorders can develop in wheat heads. Learn the symptoms of several common disease and insect issues being observed in South Dakota wheat this growing season.

A soybean field showing healthy soybean plants, but roots are infested with SCN. The top right corner has an in-set picture that shows a soybean root with white pear-shaped SCN female cysts.

Drought Conditions May Increase Soybean Cyst Nematode Population in Soil

Moisture stress coupled with above-normal temperatures have been linked with increased soybean cyst nematode populations in the soil. In order to keep populations in the soil below the yield-reducing levels, there are a few management practices which can be used.

a women with brown hair wearing a grey sweater

SDSU Extension Welcomes Anna Barr as Farm to School Specialist

July 12, 2021

A native of Newton, Iowa, Anna Barr brings broad expertise to the position as Extension’s first Farm to School Nutrition Field Specialist.