Recommended Chemicalsfor Weed and Brush ControlMP44

Arkansas 2020

See MP44 online at www.uaex.eduCooperative Extension Service, University of

Arkansas System, U.S. Department of Agriculture and County Governments Cooperating

Should the registration of a herbicide or certain uses of a herbicide be cancelled by federal or state agencies, recommendations thus affected herein are no longer applicable after such action is taken. For herbicides such as MSMA, 2,4-D, diuron, etc., where several manufacturers and formulations exist, not all formulations may be labeled for the same uses. Use only a herbicide which has the intended use on the label. Use of products and trade names in this handbook does not constitute a guarantee or warranty of

the products named and does not signify that these products are approved to the exclusion of comparable products. Some tank mix treatments are listed “grower’s risk.” This indicates the two herbicides are not labeled for the tank mix, but research has shown them to be effective. To tank mix is not a violation of law, but it is done at the grower’s own risk.

UNIVERSITY OF ARKANSAS SYSTEM DIVISION OF AGRICULTURE, COOPERATIVE EXTENSION SERVICEIssued in furtherance of Cooperative Extension work. Acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture, Director, Cooperative Extension Service, University of Arkansas. The University of Arkansas System Division of Agriculture offers all its Extension and Research programs and services without regard to race, color, sex, gender identity, sexual orientation, national origin, religion, age, disability, marital or veteran status, genetic information, or any other legally protected status, and is an Affirmative Action/Equal Opportunity Employer. MP44–10M–1-20RV

TABLE OF CONTENTS

This publication printed with soybean ink on recycled paper.

Alfalfa............................................................................................................................................... 117Application, Herbicide ...................................................................................................................... 4Aquatic Herbicides........................................................................................................................... 145Aquatic Herbicides, Application Notes............................................................................................. 151 Aquatic Herbicides, Approved for Aquatic Use................................................................................ 150Aquatic Herbicides, Toxicity to Some Fish ...................................................................................... 156Aquatic Herbicides, Use Restrictions .............................................................................................. 149Aquatic Herbicides, Weed Response Ratings for............................................................................ 146Aquatic Weed Control, Grass Carp for ............................................................................................ 148Brush Control Herbicides, Weed Response Ratings for Pasture .................................................... 114Brush Control, Non-Cropland .......................................................................................................... 184Brush Control, Pastures .................................................................................................................. 115Burndown Herbicides – All Crops, Weed Response Ratings for ..................................................... 21Burndown Herbicides – Cotton ........................................................................................................ 22Burndown Herbicides – Rice ........................................................................................................... 25Burndown Herbicides – Soybeans .................................................................................................. 23Burndown Herbicides, Plant-Back Recommendations for ............................................................... 27 Clover: Red, Alsike, Ladino ............................................................................................................. 119Corn and Grain Sorghum Herbicides, Crop Replant and Rotation Guide ....................................... 68Corn and Grain Sorghum Herbicides, Fertilizer as a Carrier Compatibility ..................................... 69Corn and Grain Sorghum Herbicides, Restrictions for Feed, Forage and Grazing ......................... 69Corn and Grain Sorghum Herbicides, Soil-Applied Rates ............................................................... 67Corn Herbicides, Weed Response Ratings for ................................................................................ 66Corn, Field ....................................................................................................................................... 70Cotton .............................................................................................................................................. 32Cotton Herbicides, Crop Replant and Rotation Guide ..................................................................... 29Cotton Herbicides, Fertilizer as a Carrier Compatibility ................................................................... 31Cotton Herbicides, Preharvest Intervals .......................................................................................... 30Cotton Herbicides, Restrictions for Feed, Forage and Grazing ....................................................... 30Cotton Herbicides, Soil-Applied Herbicide Rates ............................................................................ 31Cotton Herbicides, Weed Response Ratings for ............................................................................. 28Edamame ........................................................................................................................................ 61Forage ............................................................................................................................................. 111Forage Herbicides, Control of Common Weeds in Pastures ........................................................... 106Forage Herbicides, Restrictions for ................................................................................................. 110Forage Herbicides, Weed Response Ratings for ............................................................................ 109Forestry ........................................................................................................................................... 179Forestry Herbicides Used for Herbaceous Weed Control, Estimate of Potential Control ................ 178Forestry Herbicides, Weed Response Ratings for .......................................................................... 178Fruit and Nuts .................................................................................................................................. 135Fruit and Nuts, Weed Control in Home Plantings ............................................................................ 134General Information ......................................................................................................................... 3Herbicide Classification According to Primary Site of Action........................................................... 11

Herbicide Sensitivity Chart .............................................................................................................. 27Lawn Weeds, Control of Common................................................................................................... 157Miscanthus, Other Bio-Fuel Crops .................................................................................................. 119Non-Cropland, Guide to Woody Plant Response to Herbicides ...................................................... 183Non-Cropland, Herbaceous Weed Control ...................................................................................... 184Ornamentals .................................................................................................................................... 174 Ornamentals, Quick Reference for Common Ornamental Weed Control Options .......................... 173Pasture Weeds, Control of Common ............................................................................................... 106Peanuts ........................................................................................................................................... 63Publications, Supplemental ............................................................................................................. 193Rainfall Free Periods for Corn/Grain Sorghum Postemergence Herbicides ................................... 69Rainfall Free Periods for Rice Postemergence Herbicides ............................................................. 90Rainfall Free Periods for Soybean Postemergence Herbicides ...................................................... 45Resistance, Weeds to Herbicides.................................................................................................... 18Rice ................................................................................................................................................. 92Rice Herbicides, Crop Replant and Rotation Guide ........................................................................ 91Rice Herbicides, Weed Response Ratings for ................................................................................ 89Sorghum .......................................................................................................................................... 79Sorghum Herbicides, Weed Response Ratings for ......................................................................... 78Soybean Growth Stages.................................................................................................................. 52Soybean Herbicides, Crop Replant and Rotation Guide ................................................................. 42Soybean Herbicides, Fertilizer as a Carrier Compatibility ............................................................... 45Soybean Herbicides, Preharvest Intervals ...................................................................................... 45Soybean Herbicides, Restrictions for Feed, Forage and Grazing ................................................... 44Soybean Herbicides, Soil-Applied Herbicide Rates......................................................................... 46Soybean Herbicides, Weed Response Ratings for ......................................................................... 41Soybeans......................................................................................................................................... 47Sprayer Clean-Up for Phenoxy Herbicides...................................................................................... 193Sunflowers ....................................................................................................................................... 191Trade Name, Common Name, Formulation, Mode of Action, and Manufacturer of Herbicides ..... 12Turfgrass ......................................................................................................................................... 163Turfgrass Herbicides, Turfgrass Tolerance ..................................................................................... 162Turfgrass Herbicides, Weed Response to Postemergence............................................................. 161Turfgrass Herbicides, Weed Response to Preemergence .............................................................. 160Vegetables....................................................................................................................................... 122Vegetables, Herbicide Registration Chart for Home Gardens ......................................................... 121 Vegetables, Small Fruit and Nut Crops, Weed Response Ratings for ............................................ 120Wheat .............................................................................................................................................. 86Wheat Herbicides, Crop Replant and Rotation Guide ..................................................................... 85Wheat Herbicides, Fertilizer as a Carrier Compatibility ................................................................... 84Wheat Herbicides, Restrictions for Feed, Forage and Grazing ....................................................... 84Wheat Herbicides, Weed Response Ratings for ............................................................................. 83Wildlife Food Plots ........................................................................................................................... 190

This publication printed with soybean ink on recycled paper.

See MP44 on the web at www.uaex.edu.

Cooperative Extension Service, University of Arkansas, U.S. Department of Agriculture, and County Governments Cooperating