Corn Weeds
Is It Too Late to Spray Weeds?
There are a lot of uncertainties with spraying perennial weeds in mid-fall. Under the right weather conditions, some applications may still be worthwhile. However, expensive herbicides applied to large swaths of land may be too risky this late in the season.
Now is the Time to Plan Your Weed Management Plan for the 2027 Growing Season
As the 2026 harvest season comes to an end, now is the time to start planning your weed management plan for next year. Learn some expert tips for getting your operation off to a good start this coming growing season.
Crops
During the growing season, SDSU Extension provides weekly production recommendations.
2026 Harvesting Order for Weed Management
The 2026 growing season was abnormally hot and dry, which may have reduced the number of weed flushes witnessed this year.
Mixing it Up: Fall Herbicide Mixtures for Kochia Management
Fall-applied residual herbicides can help manage early emerging weeds, such as kochia, by using snowmelt and early spring rainfall as activating precipitation to move the herbicide into the soil layer of emerging weed seedlings.
Recent Rainfall Likely to Improve Fall Herbicide Applications for Noxious Weed Management
Under hot and dry conditions, weeds are stressed and herbicide activity decreases, leading to poor management. While recent rain events have impeded row crop harvest, the moisture is welcomed to improve the activity of fall herbicide performance for noxious weeds in pastures and rangelands.
Utilizing Cool-Season Crops for Weed Management
For producers facing increasing challenges from herbicide-resistant Palmer amaranth or waterhemp, incorporating a cool-season crop can provide another tool for diversifying weed management.
What is Velvetleaf?
Velvetleaf is a large weed with soft leaves that’s normally associated with corn and soybean fields. However, we’re hearing more gardeners and specialty crop growers reporting its presence.
Corn
Nearly one out of every three dollars generated by South Dakota agriculture starts in a corn field. Two of every three rows of corn become ethanol.
Clock tells the time of the day, not when the job is done. Is that true for weed management?
Common banter at the farm gate implies farmers work long days to get the job finished. However, weed management may improve if spraying stops at a particular time of day.