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Tick that is dark brown to black in color with a reddish-orange abdomen.

An identification guide to common Ticks of South Dakota

A guide to identifying common ticks in South Dakota

Several small green insects on a plant leaf.

Soybean Aphids in South Dakota

Factsheet on Soybean Aphids in South Dakota

Grasshopper Mites in South Dakota

Fact sheet that covers the ectoparasite grasshopper mites.

A herd of cattle gather around a stock pond on a vast, lush grassland. Courtesy: USDA [CC BY 2.0]

The Environmental Disease Called Pinkeye

Plentiful moisture during the grazing season might contribute to what could be called a “bad year” for a certain cattle disease: pinkeye.

Herd of mixed cattle grazing in a vast, open range. Courtesy: U.S. Department of the Interior Bureau of Land Management

Census of Agriculture Cattle Insights

The "2017 Census of Agriculture" is a valuable source for insights related to cattle operations at the state level. There were 13,928 operations across South Dakota with cattle in 2017, and the total inventory was 3,988,183 head.

2017-2018 Multi-State Organic Oat Variety Trial Results

The tight production margins currently present in agriculture have increased interest in growing organic oats.

Green corn leaf with common stalk borer caterpillar within.

Common Stalk Borer Activity Update: May 16, 2019

The hatching and movement of common stalk borer caterpillars can be estimated by using degree days with a developmental threshold of 41 degrees Fahrenheit. Common stalk borer eggs typically begin to hatch at 575 degree days.

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

How to Identify Common Stalk Borers and Thresholds

As corn is being planted, it is important to remember that there are insect pests capable of injuring young, vegetative corn. One such pest is the common stalk borer. Although common stalk borer outbreaks are sporadic, when present in high numbers they can cause significant yield loss.

Winter wheat blades with lesions with a dark brown center and yellow margin surrounding the lesion.

Diagnosing Early Diseases in Winter Wheat

Winter wheat progress is relatively behind the five-year average given the long winter season and low spring temperatures. However, it is important to scout and diagnose early-season diseases in winter wheat to determine the need for an early season fungicide.

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

2019 Alfalfa Weevil Activity Prediction

One of the major insect pests of alfalfa in South Dakota is the alfalfa weevil. In 2018, we received fewer reports of alfalfa weevils, which may have been a result of the cooler and wetter spring conditions. It’s possible that populations may also be lower in 2019 due to the similar spring conditions that we are currently experiencing.