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Winter wheat plants at the tillering growth stage with leaves yellowing as a result of wheat streak mosaic virus infection.

Wheat Streak Mosaic Developing in Winter Wheat Fields

A few winter wheat fields in central South Dakota have been found with wheat streak mosaic disease. Incidence of this disease varied from a few plants to large portions of the field with yellowing leaves.

Gray caterpillar with dark markings, white splotches and a white stripe running down the middle of its back.

It’s Time to Scout Alfalfa for Cutworms

One of the earliest insect pests that can be found in South Dakota’s alfalfa fields are army cutworms. Injury from cutworms can sometimes be overlooked until large patches of an alfalfa field have been “cut.”

Farmer standing over insecticide jug in wheatgrass field

A Ban or New Rules for Chlorpyifos May Be Coming Soon

Recently, a federal appeals court gave the U.S. Environmental Protection Agency a 60-day deadline to either ban insecticides containing chlorpyrifos or set new guidelines for its use.

Green beetle larvae with a white stripe running down its body.

Alfalfa Weevil Activity Prediction Update: May 6, 2021

The cooler temperatures the last few days probably slowed down alfalfa weevils again, but everyone should be scouting fields due to the possibility of alfalfa weevil activity.

Purple-brown caterpillar with orange head on a green corn leaf.

Common Stalk Borer Activity Estimate: May 6, 2021

We are beginning to accumulate degree days a little faster for common stalk borers. Eggs will be hatching through much of the state, and we will continue to monitor activity as the season progresses.

Green beetle larvae with a white stripe running down its body.

Alfalfa Weevil Activity Prediction Update: April 8, 2021

As the temperatures begin to warm up around South Dakota, it is important to remember that some insect pests are accumulating degree days. One of the insect pests that we use degree day models to monitor is the alfalfa weevil.

A yellow beetle with a black head, and square black markings on its back standing on a soybean leaf.

2021 South Dakota Overwintering Bean Leaf Beetle Predicted Mortality

Bean leaf beetle emergence is approaching, and it’s important to start thinking about this pest. Once soybean begin emerging, overwintering adult beetle populations will move into soybean fields and begin feeding on seedlings.

Fence line along a broad, open pasture.

Lameness in Cattle: Causes Associated With Injury

Most cattle in pastures and feedlots are exposed to multiple potential causes of injury. Learn some of the injury-related causes of lameness in cattle, starting with the foot and working our way up.

Cow exhibiting lameness symptoms with focus on its right, rear foot.

Lameness in Cattle: Causes Associated With Infections

Infections are among the most-common reasons for lameness in feedlot and adult cattle, and in some cases they can be treated or prevented with more success than other causes of lameness.

Cow receiving veterinary treatment for hoof injury.

Getting to the Bottom of Cattle Lameness Cases: Diagnosis

Making the right decisions about how to deal with a lame animal depends on how accurately the cause of the lameness can be diagnosed and localized.