Arkansas Field Crop Herbicides
Weeds can be the most important pest affecting crops. Weeds compete with crops for available light, water, nutrients and space. Most Extension recommendations for everything from variety, seeding rates, fertility and even grazing are based on having weed free crops. The information on this page contains useful practical recommendations for weed identification and management (control)
- Zero Tolerance Pigweed Management
Zero Tolerance pigweed management is a community based program that focuses on reduction of pigweed seed in the soil seedbank. Reducing pigweed seed production each year is really the only way to stay ahead of resistance and cost effectively manage the number of pigweed that emerge in crop fields.
- Sencor Tolerance to Wheat Varieties
Certain wheat varieties are more tolerant to metribuzin than others. Products such as Axiom and possibly others may contain metribuzin and therefore care should be taken when selecting wheat varieties if these products are intended to be used for weed control.
- Flag the Technology
A simple and effective method for identifying fields based on the herbicide tolerant technology planted in the field.
- MP44 Recommended Chemicals for Weed and Brush Control
MP44 Recommended Chemicals for Weed and Brush Control A comprehensive guide to weed management in various areas including: crops, pasture, vegetables and homeowner yards. Updated annually with labeled herbicides for various uses. Information on weed resistance, sprayer calibration and crop tolerance.
- Prevention and Control of Glyphosate-Resistant Pigweed in Soybean and Cotton
Glyphosate resistant pigweed has become the most economically significant weed pest of both cotton and soybean. This fact sheet contains alternative control options and recommendations for pigweed control.
- Sunflowers Grown for Dove Hunting
Weed control is one of the most important pest management issues in sunflowers whether grown for production or hunting. This fact sheet contains information on all aspects of sunflower production.
- Pasture Weed and Brush Control
Properly applied weed control is one of the most cost-effective management practices available to forage producers. Many weed control practices are relatively inexpensive when compared to other pasture improvement methods.
- Glyphosate-Resistant Ryegrass Control
Italian ryegrass has become resistant to glyphosate as well as many wheat herbicides commonly used in Arkansas. Prevention and control of this pest are discussed.
- Soybean Varietal Tolerance to Metribuzin Herbicide
Certain varieties of soybean are more tolerant to metribuzin than others. Many soybean herbicides, such as, Boundry and Authority MTZ contain metribuzin. Care should be taken with variety selection when herbicides containing metribuzin are to be used. All soybean varieties were sprayed with 0.5 lb ai/Acre rate of metribuzin.
- Herbicide Application and Sprayer Calibration
This link provides information for general herbicide application and mixing techniques as well as sprayer calibration procedures.
- Weed Identification Resources
- Herbicide Resistance Management
- ALS Resistant Nutsedge in Rice
- Answers to Frequently Asked Questions on Herbicide Resistance Management
- What Growers Should Know About the Spread of Herbicide Resistant Weeds
- Herbicide Mode of Action / Classification Chart
- 11 Biggest Herbicide Resistant Weeds
- Barnyardgras Control in Rice
- Harvest Weed Seed Control