Weeds & Invasive Plants

Leafy Spurge Management in the Early Summer

Early summer and fall integrated management tactics are critical for leafy spurge management. Now is the time to consider implementing early summer management tactics for leafy spurge.

Dicamba Cannot be Applied Postemergence in Dicamba-Tolerant Soybeans After June 20

With weather delaying the planting of soybean, the clock is ticking to spray dicamba before the cutoff date of June 20, 2024. Learn what application tactics might work best before the deadline.

Considerations of Corn Postemergence Herbicides

Managing weeds after emergence is important to protect the yield potential of corn crops. Learn some important application considerations before selecting a postemergence herbicide.

Leafy Spurge or an Imposter?

Leafy spurge is a statewide noxious weed that can be difficult to manage. However, are the recent yellow flowers appearing throughout South Dakota landscapes leafy spurge or another species?

Critical Period of Weed Control: A good, but not perfect guideline

The critical period of weed control is the period during a crop lifecycle when weeds need to be managed to avoid a significant yield loss.

SD 4-H team wins national land and range judging contest

May 29, 2024

The Haakon/Bennett County 4-H range judging team won first place at the 2024 National Land and Range Judging Contest held from April 30 to May 2, 2024, in El Reno, Oklahoma. Team members include Bennett County’s Emily Zickrick and Haakon County’s Colden Kramer, Ashley Schriever and Tara Schofield.

Absinth Wormwood Control in the Spring

Absinth wormwood is a difficult-to-control, noxious weed that can produce great amounts of seed (50,000 seeds per-stem) and spreads only by seed, illustrating the importance of management prior to seed production.

Weeds Are Starting to Emerge: Even After a Preemergence Herbicide Application

During recent scouting, weeds were noticed in plots treated with preemergence herbicides. Learn some troubleshooting considerations to help determine why some weeds emerge following preemergence treatments.

Early Season Prevalence of Field Pennycress and Shepherd’s Purse

Many fields that are planted to winter wheat or have yet to be tilled may have a healthy infestation of field pennycress or shepherd’s purse. Learn some expert tips for identifying and managing these weeds before they become a problem this growing season.