Soybean Weeds
Recommended Content
Best Management Practices for Soybean Production
This is your unbiased, research-based guide to soybean production to help increase yield, reduce input costs and protect your investment.
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.
Grazing Corn Stalks to Combat Volunteer Corn Following Drought Periods
The incidence of volunteer corn in subsequent crops tends to be greater following periods of drought. Utilizing livestock to graze corn residue following harvest is a strategic management practice to reduce volunteer corn in the following crop.
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.
Soybean
SDSU Extension is your partner to increase yields and improve efficiency.
Soybean Plants Are Entering the Reproductive Stage (R1): Last chance to spray select herbicides
The summer solstice roughly marks the date when soybean plants switch from vegetative growth to reproductive growth. An important aspect of the reproductive growth stage is that many herbicides can no longer be applied after plants reach any bloom stage.
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.