ERM-1466 5/20 REFERENCE GUIDE FOR RANGELAND Chemical Weed and Brush Control Reference Guide for Rangeland Robert K. Lyons, Megan Clayton, Larry Redmon, Barron Rector, Steven Evans, and Charles Kneuper* This publication provides general suggestions for herbicides used to control brush and weeds on Texas rangelands. It also gives information on the levels of control expected. The information is presented in good faith, but no warranty, express or implied, is given. Weed and brush control results may vary tremendously if treatments are applied under less than optimum conditions. Users of this publication may find the decision support system for rangeland weed and brush control technology selection—PestMan—helpful. PestMan is designed to recommend appropriate mechanical and chemical rangeland brush and weed control treatments for Texas and New Mexico. All herbicide treatments included in this publication are also included in PestMan, which helps in estimating costs and the economic impact of various treatment options. How to use this guide 1. Find your problem weed or brush species in the should expect to kill with that herbicide and Index on page 3. rate. For percent kill ranges, see page 4. 2. Click on or touch the page number that c. See the fifth column for the method to use— corresponds to the plant to go to the page where it how to apply the chemical. This could be foliar, is listed; find the plant name in the first column on stem, cut-stump, aerial, etc. those pages. 5. The three columns on the right explain other 3. See the second column on those pages for a list of details such as how much surfactant to use, when to suggested herbicides (these are active ingredients). treat the plant, and any exceptions. Be sure to read 4. Choose herbicides based on: these before choosing an herbicide. a. Whether you would like to make a broadcast 6. Go to page 5 and match the herbicide you chose for application or treat individual plants (third or controlling the problem plant with product names fourth column). you are more likely to know. b. Check the effectiveness (VH, H, M, and L), 7. For tips on measuring and mixing herbicides, see which tells you the percentage of plants you page 6. *Professor and Extension Range Specialist, Associate Professor and Extension Range Specialist, Professor and Extension Forage Specialist, Associate Professor and Extension Range Specialist, Lecturer, The Texas A&M University System; and State Rangeland Management Specialist, USDA–Natural Resources Conservation Service 2 Index Control descriptions for weed and brush plants are located on the page numbers indicated. Carefully check the table. More than one control measure may exist. Weed species Page Wild carrot.............................................................................. 8, 9 Hercules club ..............................................................17, 18, 20 Wolfweed ..................................................................................14 Honeylocust ............................................................................ 22 African rue ...................................................................................7 Woolly locoweed ....................................................................12 Huisache ...........................................20, 21, 22, 23, 25, 30, 31 Berlander lobelia ..................................................................7, 8 Yankeeweed .............................................................................10 Lotebush ...............................................................16, 18, 20, 24 Bitter sneezeweed ..............................................................7, 8 Macartney rose ....................................................................... 24 Broomweed (annual or common) ................................. 8, 9 Brush species Page Mesquite ...........................................25, 26, 27, 28, 29, 30, 31 Broom snakeweed ............................................................ 9, 10 Mesquite, western honey ................................................... 30 Buffalobur ...............................................................................7, 8 Agarito ........................................................................................16 Mixed brush–South Texas ............................................30, 31 Bullnettle ............................................................................10, 11 Ashe juniper .............................................................................16 Mixed brush–Davis Mountains ..........................................31 Camphorweed ......................................................................7, 8 Baccharis .............................................................................16, 17 Mohrs shinoak .........................................................................31 Carolina horsenettle ..............................................................10 Beebrush ............................................................................18, 35 Post oak ......................................................................................18 Cocklebur ................................................................................7, 8 Beebush ..............................................................................18, 35 Pricklyash (Hercules club) .......................................17, 18, 20 Common goldenweed .........................................................11 Bigelow shinoak ......................................................................17 Pricklypear ..................................................................30, 31, 32 Croton .......................................................................................7, 8 Blackberry .................................................................................17 Redberry cedar ..........................................................16, 32, 33 Dogfennel .................................................................................10 Blackbrush ............................................................17, 18, 30, 31 Redberry juniper ......................................................16, 32, 33 Drummond’s goldenweed ..................................................11 Blackgum ...................................................................................18 Retama .........................................................................30, 31, 33 Flathead sedge ........................................................................12 Blackjack oak ............................................................................18 Roosevelt willow ..............................................................16, 17 Gray goldaster .........................................................................13 Blueberry cedar .......................................................................16 Running live oak .................................................................... 34 Horehound .............................................................................7, 8 Bois d’arc ............................................................................. 17, 18 Sacahuista ................................................................................ 34 Jimmyweed ..............................................................................14 Bumelia ......................................................................................16 Saltcedar ................................................................................... 34 Lespedeza .................................................................................13 Burrobrush ................................................................................18 Sand sagebrush ..................................................................... 34 Marshelder ............................................................................. 7, 8 Catclaw acacia .....................................................16, 17, 30, 31 Sand shinnery oak ................................................................. 35 Narrowleaf goldaster ............................................................13 Catclaw mimosa ..................................................16, 17, 18, 31 Saw palmetto .......................................................................... 35 Perennial broomweed ..................................................... 9, 10 Cenizo .........................................................................................19 Seep willow .......................................................................16, 17 Plantain ................................................................................... 8, 9 Chinese tallowtree ...........................................................17, 19 Skunkbush .........................................................................30, 31 Prairie gerardia ......................................................................7, 8 Cholla ..........................................................................................16 Spiny hackberry ........................................................20, 30, 31 Ragweed ..................................................................................7, 8 Christ thorn .......................................................................19, 26 Sweetgum .................................................................................18 Rayless goldenrod ..................................................................14