Crop Treatments
All Crop Treatments Content
South Dakota Pesticide Container Recycling
The South Dakota Department of Agriculture and Natural Resources is again offering pesticide container recycling services across the state. View a complete list of 2026 dates and locations.
2026 Growing Season: Forecasted dry weather and the implications on postemergence herbicide activity
Weather cannot be controlled, but there are variables we can control to help increase the effectiveness of postemergence herbicides during drought conditions.
Have you observed chemical management failure for alfalfa weevils?
SDSU Extension entomologists are currently looking for alfalfa fields with a past alfalfa weevil insecticide failures. We are collaborating with North Dakota State University and the University of Minnesota on project to determine if pyrethroid resistance exists in our respective states.
Crops
During the growing season, SDSU Extension provides weekly production recommendations.
Syngenta to Stop Production of Gramoxone®
Global pesticide developer Syngenta announced on March 3, 2026 that they will cease global production of the herbicide product Gramoxone® (paraquat), a pivotal source of weed control in corn and soybean production, by June 30, 2026.
Great Temperature Shifts This Spring: Implications for burndown herbicide applications
The 2026 growing season is beginning as temperatures begin to increase. The increased temperatures are favorable for growing conditions, however, great temperature shifts throughout the day may adversely affect the activity of herbicide applied for preplant burndown.
Using Feedlot Manure to Reduce Crop Production Costs
Manure plays a key role in reducing system costs for integrated livestock-crops enterprises. Livestock waste can be a valuable source of crop nutrients when correctly managed.
Sorghum Weed Control
Early competition, especially from grass, is critical for successfully controlling weeds in sorghum. There are preemergence as well as postemergence herbicides available for this crop. Early treatment provides the best control of broadleaved weeds with crop stage also being a critical factor for some postemergence treatments.
SDSU Research Update on Herbicide Resistance Screening
SDSU Extension's herbicide resistance screening has been gathering valuable information on regional resistance patterns across South Dakota. Results will help guide herbicide selection, tank-mix strategies, and resistance management programs for growers.
EPA Approves Dicamba for Over-the-Top Applications in Tolerant Soybean in 2026 and 2027
The Environmental Protection Agency has issued a limited-time registration of over-the-top use of dicamba on tolerant cotton and soybean for two growing seasons, 2026 and 2027.