While many herbicides have long cropping restrictions because they take a long time to break down, there are several herbicides that have a short half-life. Generally, herbicides like Sharpen (saflufenacil), 2-4D and Roundup products (glyphosate) break down fairly quickly in the soil and cause less problems with herbicide carryover.
Proven benefits of cover crops in a corn/soybean rotation have farmers re-evaluating their weed management programs. One critical risk to evaluate is residual herbicide use and potential carryover given the timing of cover crop seeding.
The 2020 summer was hotter and drier than normal for most farms, so herbicide carryover will be a major issue for planting cover crops. Herbicides degrade based on soil temperature, rainfall, time of application, organic matter, soil type, soil pH, and sunlight. Read more in this article from Ohio's Country Journal.
Herbicides can be tricky to work around when cover crops are included in the rotation. So, how can you ensure you're maximizing the effectiveness of cover crops when herbicides are involved in your farming system?
Herbicides can be tricky to work around when cover crops are included in the rotation. So, how can you ensure you're maximizing the effectiveness of cover crops when herbicides are involved in your farming system? (Courtesy of Cover Crop Innovators)
Environment, herbicide chemistries, cover crop species and timing of herbicide application and cover crop seeding all play a role in herbicide carryover to covers.
Environment, herbicide chemistries, cover crop species and timing of herbicide application and cover crop seeding all play a role in herbicide carryover to covers.
Ohio State University Extension explains what options growers have in controlling marestail in wheat stubble if they plan on seeding cover crops later this summer.
The National Strip-Tillage Conference returns August 8-9, 2024!Build and refine your strip-till system with dozens of new ideas and connections at the 11th Annual National Strip-Tillage Conference in Madison, Wis. Aug. 8-9, 2024. Experience an energizing 2-day agenda featuring inspiring general session speakers, expert-led Strip-Till Classrooms and collaborative Strip-Till Roundtables. Plus, Certified Crop Adviser credits will be offered.
Georgetown, Del., no-tiller Jay Baxter was planning on conducting a cover crop experiment with oats, but when Mother Nature got in the way, he quickly pivoted to another idea for a different type of cover crop experiment.