Why is Fall Herbicide Use Essential?
Italian ryegrass (Lolium perenne ssp. multiflorum) has been confirmed to harbor resistance to ALS, clethodim, glyphosate and paraquat herbicides in the southern United States (Heap 2023). There is no good control option for this herbicide-resistant ryegrass if management is postponed until the spring. Fall residual herbicide applications are necessary to control herbicide-resistant ryegrass populations effectively in the Midsouth states.
120 days after November application
Photos taken in spring 2022, Humphrey County, MS
FMC Fall Residual Herbicide Control
Rice and Soybean Option
Command® 3ME Microencapsulated Herbicide @ 24 FL. OZ./A
flumioxazin 51WDG @ 2 oz./A, paraquat 3 lbs @ 32 oz./A, NIS @ 0.5% v/v
Corn, Cotton and Soybeans Option
Anthem® Flex Herbicide @ 3.5 FL. OZ./A
flumioxazin 51WDG @ 2 oz./A, paraquat 3 lbs @ 32 oz./A, NIS @ 0.5% v/v
Best Management Practices for Fall Residual Herbicide Use
Application Timing Preference
Use Rates and Application
| Command 3ME Microencapsulated Herbicide | Anthem Flex Herbicide | |
| Use rate |
Medium-Mixed Soils: Fine-heavy soils: |
3.5-4 fl. oz./A |
| Crop rotation |
Immediate: Rice, Soybeans, Sweet Potatoes, Sugar Cane 9 months: Cotton, Corn, Sorghum |
Immediate: Corn, Soybeans, Sunflowers 4 months: Cotton, Sweet Potatoes, Peanuts 6-10 months: Sorghum |
| Tank-mix Partners | For rice rotation, add flumioxazin for cool-season broadleaf control and paraquat if ryegrass is emerged. | Add flumioxazin or metribuzin for additional control of cool-season broadleaves. Add paraquat if ryegrass is emerged.1 |
| Application method | By ground or follow state 24c aerial labels. | By ground or air. |
1The addition of metribuzin may increase the re-crop interval for rice, cotton etc. make sure to check all herbicide labels before using.
Paraquat is a Restricted Use Pesticide. Always read and follow all label directions, precautions and restrictions for use. Some products may not be registered for sale or use in all states. FMC, the FMC logo, Anthem and Command are trademarks of FMC Corporation or an affiliate. ©2023 FMC Corporation. All rights reserved. (041_2023)
