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Gray beetle with long antennae that are alternating white and black pattern on green leaf petiole.

Dectes Stem Borer Adults Active in Sunflower

In South Dakota, one of the insects that is commonly observed in sunflower is the Dectes stem borer larva. At this point in the season, adults are beginning to become active with females laying eggs in sunflower plants.

Swarm of mosquitoes.

West Nile Virus Update: September 3, 2025

As of August, the South Dakota Department of Health indicated that West Nile Virus positive mosquito pools have been detected in Beadle, Brookings, Brown, Codington, Hughes, Lincoln, and Minnehaha counties.

Swarm of mosquitoes.

West Nile Virus Update: September 10, 2025

As of September 10, 2025, the South Dakota Department of Health (SD DOH) reported 59 human cases of West Nile virus from Beadle, Bon Homme, Brookings, Brown, Charles Mix, Codington, Corson, Grant, Gregory, Hamlin, Hand, Hughes, Hutchison, Hyde, Lawrence, Lincoln, Marshall, Meade, Miner, Minnehaha, Pennington, Sanborn, Spink, and Walworth counties.

Swarm of mosquitoes.

West Nile Virus Update: September 26, 2025

As of September 26, 2025, the South Dakota Department of Health (SD DOH) reported 74 human cases of West Nile Virus from Aurora, Beadle, Bon Homme, Brookings, Brown, Charles Mix, Clay, Codington, Corson, Douglas, Grant, Gregory, Haakon, Hamlin, Hand, Hughes, Hutchison, Hyde, Lawrence, Lincoln, Marshall, Meade, Miner, Minnehaha, Pennington, Roberts, Sanborn, Spink, Stanley, Union, Walworth, and Yankton counties.

Greenish brown bugs on a white sweep net cloth.

Alfalfa Plant Bugs Showing Up in Abundance

Several insect pests have been showing up early in alfalfa this season, including the alfalfa plant bug. Learn how to identify, scout, and manage this pest before it impacts your alfalfa yields.

a group of people in a meeting room

SDSU Extension’s Approach to the 2017 Drought

Most of the Great Plains, of which Western South Dakota is part of, have always been considered a semi-arid area of the U.S. This region is characterized by hot, relatively short summers, and usually cold, dry winters.

Sprawling rangeland enrolled in the conservation stewardship program.

SDSU Extension professionals win range management awards

February 12, 2024

Two South Dakota State University Extension experts have received awards from the Society for Range Management for their contributions to range science education and outreach.

Pasture contaminated with Eastern Red Cedar

Pasture Attacker: Woody Plants are Robbing Your Forage Production

Traditionally, the prairie is home to herbaceous vegetation, such as grasses and broadleaf plant species. Although many woody plants are naturally present in canyon, riparian, or river areas, they are not meant to be a part of the grassland landscape.

Ranch family examining data on a smart phone.

Feed Costs Still a Large Percentage of the Cow Budget

Monitoring, managing, and minimizing feed costs while maintaining a balanced ration is one way to maximize profit potential in the cow herd. Learn some expert tips for creating a least-cost ration.

Two black angus cows with calf in a dry pasture.

Managing For Annual Swings in Forage Production

Being able to adapt your stocking rate and grazing intensity to fit forage conditions provides you with tangible management actions you can take to protect your pastures from overgrazing in any year.