Wheat Weeds

All Wheat Weeds Content

Two small, green soybean plants with brown to yellow coloration on their leaf edges, indicative of herbicide damage. Tan sand and yellow fertilizer pellets are in the background.

Wind and Rain May Have Delayed Preemergence Herbicide Application: What Now?

With recent winds and rain, preemergence herbicide applications may be further delayed. Scouting to determine if crops and/or weeds have emerged is critical to ensure effective and safe application of preemergence herbicides.

A green leafy spurge plant with small, yellow bracts at top. Various brown and green plants surround the green leafy spurge plant.

Leafy spurge has germinated and is growing rapidly in South Dakota: Scout carefully!

Leafy spurge can reduce the value and productivity of pasture and displace desirable vegetation. Now is the time to scout for infestations to determine which management tactics will be most effective.

Corn plants and scattered weeds emerge from a dry, no-till field.

Dry Conditions May Hinder the Performance of Recently Applied Preemergence Herbicides

If a preemergence herbicide does not receive an activating rainfall, generally 0.5 to 1 inch of rain, many weeds will emerge, as the herbicide remains on the soil surface.

Ten small green pots with brown dirt and green kochia plants within with a black background.

Saflufenacil-Resistant Kochia Confirmed in South Dakota

Saflufenacil is an herbicide that can be applied at a burndown timing before most South Dakota crops to effectively manage kochia. However, overreliance on saflufenacil has selected for resistant kochia in our region.

Bull thistle, Canada thistle, and absinth wormwood emerging in early spring.

Noxious Weeds Have Germinated in East River South Dakota

Seasonal conditions have been favorable for weed germination, including biennial thistle, Canada thistle, and absinth wormwood. Learn some tips for scouting, identifying, and managing these noxious weeds before they become a problem.

Scattered weeds emerge from a no-till corn field in Kennebec.

Watch Temperature Forecast Before a Burndown Herbicide Application

As planting season approaches, no-till fields will likely need a burndown herbicide application to manage the established winter annual and early emerging summer annual weeds.

Group of farmers strategizing near a field at sunset.

Now is Time to Plan Your Weed Management Strategy for the 2025 Growing Season

As harvest season comes to an end, now is the time to start formulating your weed management plan for next year. Learn some expert tips for getting your operation off to a good start next growing season.

Now is the Time to Plan for Noxious Weed Control in 2025

Since most of South Dakota has experienced several frosts, the opportunities for fall herbicide applications are likely over. Now is the time to plan for noxious weed management for both spring and fall tactics.

Producer with tablet observing a field in late autumn.

Now Is the Time To Make Your Weed Management Plan for the 2024 Growing Season

Two pictures, both a picture of a green plant in a green pot in front of a orange/brown, brick wall. The left picture has a healthy, tall green leafy spurge plant and the right picture has an unhealthy, short green leafy spurge plant.

Evidence That 2,4-D Alone May Not Effectively Manage Leafy Spurge

The SDSU Extension Weed Science Project is currently conducting a potted plant study looking at various herbicide treatments to manage leafy spurge.