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B-1466A4-07C hemical W eed and B rush C ontrolsuggestionsforrangeland2 0 0 7 U P D AT EThis publication provides an update for some of the herbicide recommendations contained in B-1466.The herbicide control recommendations contained in this update for a specific weedor brush species supercedes any information contained in the original publication.
Common, Chemical and Product Names of Herbicides*Herbicide common nameChemical nameProduct nameActive ingredientor acid equivalentAminopyralid2-pyridine carboxylic acid, 4-amino-3, 6-dichloro-2-pyrdine carboxylic acid,triisopropanolammonium saltMilestone2 lbs./gal.Aminopyralid 1:8, 2, 4-DSee aminopyralid and 2, 4-DForefront3 lbs./gal.Clopyralid3,6-dichloro-2-methoxybenzoic acidReclaim, Pyramid R&P3 lbs./gal.2,4-D(2,4-dichlorophenoxy) acetic acidWeedar 64, Formula 40, Hi-Dep,Weedone LV4, Esteron 99 and othersconcentration varies dependingon productDicamba3,6-dichloro-2-methoxybenzoic acidBanvel, Clarity,Vision4 lbs./gal.4 lbs./gal.Dicamba:2,4-D(1:3)See dicamba and 2,4-DWeedmaster, Banvel 2,4-D, RangeStarDiesel fuel oil or kerosenerefined petroleum fractionsSeveral manufacturersFluroxypyr1-methylheptyl ester: etic acidVista1.5 lbs./gal.GlyphosateN-(phosphonomethyl) glycineSeveral including Rodeo**, Roundup,Roundup Ultradry, Glyposate 417isopropylamine salt*, concentrationvaries depending on the methyl-1,3,5-triazine-2,4(IH, 3H)-dioneVelpar L, Pronone Power Pellet2 lbs./gal. (Velpar L) 75%(Pronone Power ethy)-5-oxo-lH-imidazol-2-yl]-3-pyridinecarboxylic acidArsenal, Habitat**2 lbs./gal.Metsulfuron methylmethyl carbonyl]amino] sulfonyl] benzoateEscort, Clean Pasture, MSM 60DF60%Metsulfuron:Chlorosulfuron 3:1See Metsulfuron methyl )aminocarbonyl]benzenesulfonamideCimarron Plus48% metsulfuron15% ChlorosulfuronMetsulfuron:Chlorosulfuron 1:1See metsulfuron: ChlorosulfuronCimarron X-Tra30% Metsulfuron37.5% ChlorosulfuronMetsulfuron methylDicamba:2,4-D(1:3)See metsulfuron methyl, vision and 2,4-DCimarron Max60% (Part A)3.87 lbs./gal. (Part ylic acidTordon 22K, Triumph 22K, Picloram 22K2 lbs./gal.Picloram:Fluroxypyr(1:1)See picloram and FluroxypyrSurmount1.34 lbs./gal.Picloram:2,4-D(1:4)See Picloram and 2,4-DGrazon P D, Gunslinger2.5 thiadiazol-2-yl}-N-N’-dimethylureaSpike 20P, Spike 80 DF20% (Spike 20P)80% (Spike 80 ic acidClear Pasture, Pathfinder IIRemedy Ultra, Triclopyr 4 EC0.75 lbs./gal. (Pathfinder II)4 lbs./gal. (all others)Triclopyr:Fluroxypr (3:1)See triclopyr and 1-methylhepty oxy)acetic acidPastureGard2.0 lbs./gal.Triclopyr:2,4-D(1:2)See triclopyr and 2,4-DCrossbow3 lbs./gal.*Herbicides have been identified by the accepted Weed Science Society of America common name, and when practical, one or more product names.**Aquatic label
Items in gray boxes are recent changes approved by the Rangeland Herbicide Use Committee.Page6Weed ControlledAfrican rueHerbicide(common andchemical names– page 4)Herbicide quantity(active ingredient rate in parenthesis)Broadcast rateper acreIndividual plant/spot treatmentVelpar LVH2 ml/plantPronone Power PelletsSpike 20 PArsenal7810Broomweed(annual or common),plantain (tallow weed),wild carrotBroom snakeweed(perennial broomweed)(continued)LespedezaEscort or CimarronTime to applyRemarksUse an exact delivery handgun toapply undiluted herbicide to soilsurface at the edge of the plantcanopy.Spring or summer.Do not use on heavy clay or caliche soils.10 to 25 gal./ac. for groundbroadcast. Thoroughly wet foliagefor individual plant treatment. Add1 to 2 qts. of surfactant per 100 gals.water.Late September throughOctober (to first frost).Applications should be made to fall regrowththat is in good growing conditions. Recommendusing individual plant treatment when growingwith desirable vegetation to reduce non-targetdamage. Arsenal is a non-selective herbicide andwill kill or damage desirable vegetation if sprayed.1 pellet/plantH7.5 lbs. (1.5 lbs.)H1 qt. (0.5 lbs.)VH0.5%VH0.1 oz.Cimarron PlusVH0.125 oz.Cimarron X-traVH0.2 oz.Escort or CimarronVH0.6 oz.Cimarron PlusVH0.75 oz.Cimarron X-traVH1.2 oz.Cimarron MaxH to VHRate 1 to Rate 2Spike 20PVH3.75 lbs. of pellets(3 4 lb.)RemedySpray volume(per acre for broadcast, asdescribed for individual plant)VH1 to 2 pts.(1 2 to 1 lb.)Escort or CimarronH0.5 oz.Cimarron PlusH0.7 oz.Cimarron X-traH1.0 oz.Cimarron MaxHRate 22 to 4 gals. water for aerial spray;Spring, weeds less than 410 to 25 gals. water for groundinches tallbroadcast application. Add 1 to 2 qts.of surfactant per 100 gals. of water.2 to 4 gals. water for aerial spray;Optimum time is in the10 to 25 gals water for groundfall, but may be applied inbroadcast application. Add 1 to 2 qts. the spring.of surfactant per 100 gals. of water.VH 6 oz. of pellets(1 30 oz.) per 100 sq. ft.1Ground broadcast 20 to 20 gals. peracre with 1 to 2 qts. of surfactant per100 gals. of water.Any time—optimumperiod is Oct. 1 to April 1,except in the Trans-Pecoswhere optimum period isMay 1 to July 1.Use only on sand, loamy sand, sandy loam, loam,silt loam, silt or sandy clay loam soils.June through Augustunder good growingconditions.Plants need to be 12 to 18 inches tall beforespraying. Use the higher rate if plants are large,approaching maturity, or if the infestation levelis high.Begin application at flower bud initiation throughfull bloom.
Page11111213Weed ControlledRayless goldenrod(jimmyweed)Threadleaf GroundselUpright Prairie-coneflowerBaccharis (dryland willow,Roosevelt willow, seepwillow or willow baccharis)Herbicide(common andchemical names– page 4)Herbicide quantity(active ingredient rate in parenthesis)Broadcast rateper acreEscort or CimarronVH0.75 oz.Cimarron PlusVH1.0 oz.Cimarron X-traVH1.5 oz.Individual plant/spot treatment2 to 4 gals. of water for aerial spray;10 to 25 gals. of water for groundbroadcast application. Add 1 to 2 qts.of surfactant per 100 gals. of water.SurmountVH6 pt. (1.0 lb.)VH2%Tordon 22KVH1 qt. (1 2 lb.)VH1%Escort or CimarronVH0.4 oz.Cimarron PlusVH0.5 oz.Cimarron X-traVH0.8 oz.Cimarron MaxVHRate 2Escort or CimarronVH0.2 oz.Cimarron PlusVH0.25 oz.Cimarron X-traVH0.4Spray volume(per acre for broadcast, asdescribed for individual plant)Time to applyFall.Thoroughly wet foliage for individualplant treatment. Add 1 to 2 qts. ofsurfactant per 100 gals. of water.2 to 4 gals. of water for aerial spray;10 to 25 gals. of water for groundbroadcast application. Add 1 to 2 qts.of surfactant per 100 gals. of water.2 to 4 gals. water for aerial spray;10 to 25 gals. of water for groundbroadcast application. Add 1 to 2 qts.of surfactant per 100 gals. of water.Spring, before flower stalkdevelopment.H1%4 to 5 gals. of water for aerial spray.15 to 20 gals. water for groundbroadcast. For individual planttreatment thoroughly wet the entirefoliage, stems and trunks. Add 1 to2 qts. of surfactant per 100 gals. ofwater.Spring, when leaves are fullyexpanded and dark greenin color.Grazon P DH1%WeedmasterH1%For individual plant treatmentthoroughly wet the entire foliage,stems and trunks. Add 1 to 2 qts. ofsurfactant per 100 gals. of water.2,4-D low volatile esterH3 pts. to 3 qts.(1.5 to 3 lbs.)4 lb./gal. productRemarks
Page22Weed ControlledMesquite (suppressionand weed control)Herbicide(common andchemical names– page 4)2,4-D amine or lowvolatile esterHerbicide quantity(active ingredient rate in parenthesis)Broadcast rateper acreIndividual plant/spot treatmentL2 to 4 qts. (2 to 4 lbs.)M2% (4 lbs./gal. product)Grazon P DL1 to 1.5 qts.(0.6 to 0.9 lbs.)WeedmasterL1 to 1.5 qts.(1 to 1.5 lbs.)Cimarron MaxL0.5 to 0.75 pt.(1 8 to 3 16 lb.)Tordon 22K 1 to 1.5 qts.(1 to 1.5 lbs.) 2,4-D,4 lbs./gal. productBanvel 2,4-D amineor low volatile esterL0.5 to 0.75 pt.(1 4 to 3 8 lb.) Banvel 3 4 to 11 8 qts.(3 4 to 11 8 lbs.) 2,4-D,4 lbs./gal. productTime to applyFor aerial applications suggestedtotal spray volume is 4 gals./acre.Use oil-in-water emulsion (1 to 5 oilto water ratio considered optimum),or water plus surfactant, crop oil ormethylated seed oil.Late spring to mid-summerwith mature leaves (darkgreen color). Optimumperiod of application beginswhen soil temperature at adepth of 12 inches reaches75 degrees F and continuesfor 45 days.For ground broadcast applicationsthe suggested total spray volume is10 to 25 gals./acre. Use oil-in-wateremulsion (1 to 5 oil to water ratioconsidered optimum), or water plussurfactant, crop oil or methylatedseed oil.LRate 1 to Rate 2Tordon 22K 2,4-Damine or low volatileesterSpray volume(per acre for broadcast, asdescribed for individual plant)Thoroughly wet foliage for individualplant treatments. Add 1 to 2 qts. ofsurfactant per 100 gals. of water oran oil-in-water emulsion (5% diesel 95% water).RemedyL1 pt. to 1 qt.(0.5 lb. to 1 lb.)M1%BanvelL1 pt. to 1 qt.(0.5 lb. to 1 lb.)M1%If treatment is appliedprior to optimum soiltemperatures, efficacy willbe decreased and multipleapplications over a periodof years may be necessaryto maintain less than 10%canopy.RemarksTreatments will control many weeds.When using oil-in-water emulsion useemulsifier. Use of a treatment with a lowcontrol rating may result in multi-stemgrowth that may be more difficult tocontrol in the future.
Page23Weed ControlledMesquiteHerbicide(common andchemical names– page 4)Herbicide quantity(active ingredient rate in parenthesis)Spray volume(per acre for broadcast, asdescribed for individual plant)Time to applyVH2% in diesel fuel oilApply to the base of the trunkfrom 12 to 18 inches above the soilsurface. Apply until solution puddleson soil surface.Anytime soil is dry andpulled away from the trunk.M to H 3 qt. to 2 3 qt.(1 4 to 1 2 lb.)VH1%M 2 to 1 pt. (1 4 to1 2 lb.) Remedy 1 to 2 pts. (1 4 to1 2 lb.) Tordon 22KM to H 2% Remedy 1 2% Tordon 22KFor aerial applications suggestedtotal spray volume is 4 gals./acre.Use oil-in-water emulsion (1 to 5 oilto water ratio considered optimum),or water plus surfactant, crop oil ormethylated seed oil.Late spring to mid-summerwith mature leaves (darkgreen color). Optimumperiod of application beginswhen soil temperature at adepth of 12 inches reaches75 degrees F and continuesfor 45 days thereafter.When Reclaim is used aloneor in a tank mix the periodshould continue for 60 days.For optimum root kill donot spray if white flowersor bean elongation areobservable, if over 25% ofthe leaf canopy is damageddue to insects, disease orhail, if soil temperatures areless than 75 degrees F, 1 ft.deep, or if new vegetativegrowth is present due torecent rains.Use 1 pt./ac. Tordon 22K plus 1 2 pt./ac.Remedy, 1 2 pt./ac. Banvel plus 1 2 pt./ac.Remedy, 1 pt./ac. Tordon 22K plus 1 2 pt./ac.Banvel, 1 pt./ac. Tordon 22K plus 1 3 qt./ac.Reclaim and 1 3 qt./ac. Reclaim only in WestTexas. Banvel and Banvel mixtures havebeen more effective in West Texas thanin other parts of the state. Use mixturesthat include 1 4 pt./ac. Remedy and 1 3pt/ac. Reclaim only in Montague, Wise,Parker, Hood, Somervell, Bosque, Coryell,Lampasas, Burnet, Blanco, Kendall, Bandera,Real, Edwards and Val Verde counties andthose counties north and west of thenamed counties. Mixtures that include 1 2pt./ac. Remedy and 2 3 pt./ac. Reclaim willgive better control than mixtures with1 4 pt./ac. Remedy and 1 3 pt./ac. Reclaim.When using oil-in-water emulsion,use emulsifier added to oil for properemulsion. Use of a treatment with a lowcontrol rating may result in a multi-stemgrowth form that may be more difficult tocontrol in the future.Anytime; best resultshave been obtained withlate summer through fallapplications.Use emulsifier when adding diesel fuel oilto water. Use 1 pt./ac. Tordon 22K only onHigh Plains where no brush overstory ispresent. Late summer or fall applications,especially with Vista, will provide bestresults, but aerially spray in the winter orearly spring if heavy overstory of woodyplants is present or if damage to live oakis a concern.Broadcast rateper acreRemedyReclaim1Remedy Tordon 22K1Remedy BanvelIndividual plant/spot treatment1L 2 to 1 pt. (1 4 to1 2 lb.) Remedy 1 2 to 1 pt.(1 4 to 1 2 lb.) BanvelM 2% Remedy 1 2% Banvel1Remedy Reclaim1M to H 4 to 1 pt.(1 8 to 1 2 lb.) Remedy 1 3 to 2 3 pt.(1 8 to 1 2 lb.) ReclaimVH 2% Remedy 1 2% Reclaim1Tordon 22K BanvelTordon 22K Reclaim26Pricklypear, tasajillo1M1 to 2 pts. (1 4 to1 2 lb.) Tordon 22K 1 2 to 1 pt.1( 4 to 1 2 lb.) BanvelM to H1 to 2 pts. (1 4 to1 2 lb.) Tordon 22K 1 3 to 2 3 qt.(1 4 to 1 2 lb.) ReclaimH 2% Remedy 1 2% BanvelVH 2% Tordon 22K 1 2% Reclaim1H1 pt. to 1 qt.(1 4 lb. to 1 2 lb.)VH1%SurmountH1 pt. to 1 qt.(1 4 lb. to 1 2 lb.)VH1%Grazon P DH1 gal. (2.5 lbs.)VH2%Gramoxone ExtraTank mix Tordon 22Kwith Gramoxone ExtraThoroughly wet foliage for individualplant treatments. Add 1 to 2 qts.surfactant per 100 gals. of water oran oil-in-water emulsion (5% diesel 95% water).1Tordon 22KVistaFor ground broadcast applicationsthe suggested total spray volume is10 to 25 gals./acre. Use oil-in-wateremulsion (1 to 5 oil to water ratioconsidered optimum), or water plussurfactant, crop oil or methylatedseed oil.RemarksVH1%These two treatments are deleted from B-1466.2 to 4 gals. oil-in-water emulsion asaerial spray (a 1 to 5 diesel fuel oil towater ratio is considered optimum).20 to 25 gals. oil-in water emulsion asground broadcast (1 gal. diesel fuel oilper 20 to 25 gals. water) or 20 to 25gals. water per acre plus 1 to 2 qts.surfactant per 100 gals. water).Thoroughly wet plants for individualplant treatment adding 1 to 2 qts.surfactant per 100 gals. of spray mix.
Page29Weed ControlledSaltcedarHerbicide(common andchemical names– page 4)ArsenalArsenal RoundupHerbicide quantity(active ingredient rate in parenthesis)Broadcast rateper acreIndividual plant/spot treatmentVH2 qts. (1 lb.)VH1%VH1 qt. (1 2 lb.)Arsenal 1 pt.(1 2 lb.) RoundupVH 2% Arsenal 1 2% RoundupRemedy1VH25% in diesel fuel oilTank mix Arsenal withRodeo (glyphosate)30YuccaSpray volume(per acre for broadcast, asdescribed for individual plant)Minimum 10 gals./acre for aerial orground broadcast sprays. Thoroughlywet foliage for individual planttreatment. Add 1 to 2 qts. ofsurfactant per 100 gals. water.July through September oruntil leaves begin to turnyellow.When exposure to aquatic environmentsis possible use aquatic labels of Arsenal andRoundup (see table “Common, Chemicaland Product Names of Herbicides”).Arsenal alone or in combination withRoundup will cause damage to desirableApply to lower 12 to 18 inches oftrunk to wet the trunk; do not sprayto point of runoff. Apply completelyaround the trunk.Growing season when leaveshave mature leaves.This is commonly called the low volumebasal application method. Use a hollowcone nozzle with X1 orifice.H2% in diesel fuel oilSpray the center of each individualwhorl of leaves to the point of runoffAnytimeComplete coverage of leaves is notnecessary. The crown of each plant mustbe thoroughly wetted with the herbicidemixture.May through September.Use emulsifier and agitate to maintainemulsion. Complete coverage of leaves isnot necessary. The crown of each plantmust be thoroughly wetted with theherbicide mixture.Spring and summer.Direct spray into the center of each whorl.Crop oil concentrate, modifiedseed oil or modified seed oil/organosilicone are the preferredadjuvants. For aerial applications aminimum of 4 gals./ac. total sprayvolume is recommended.Spring through fall prior tofrost.A second follow-up application ofCimarron Max at Rate 1 or Rate 2 plus2,4-D low volatile ester at 0.5 to 0.75lbs. a.i./ac. within 2 years of the initialapplication may be required to controlyucca seedlings and regrowth fromrootstocks.Thoroughly wet foliage for individualplant treatment.April through July.H2% in 1:5 diesel fueloil:water emulsionVH15% in diesel fuel oilHUndiluted2 to 4 ml./plant whorlPathfinder IINewBurrobrushRemarksThis recommendation is deleted, and moved to the remarks section.RemedyCimarron Max 2,4-D low volatile esterTime to applyVHUndilutedHRate 2 Cimarron Max 1 pt. to 1.5 pts. 2,4-D(4 lb. a.i./gal. product)Tordon 22KVH1%Grazon P DVH2%Use an adjustable cone nozzle (X1orifice) and spray a 2 second burstinto each whorl.Use an exact delivery handgun set at2 or 4 ml. per whorl dose.Use an adjustable cone nozzle (X1orifice) and spray a 2 second burstinto each whorl.
Funding for this publication was provided in part by Dow AgroSciences, Dupont Agricultural Products and BASF.The information given herein is for educational purposes only. Reference to commercial products or trade names is madewith the understanding that no discrimination is intended and no endorsement by Texas Cooperative Extension is implied.Produced by Agricultural Communications, The Texas A&M University SystemExtension publications can be found on the Web at: http://tcebookstore.orgVisit Texas Cooperative Extension at http://texasextension.tamu.eduEducational programs conducted by Texas Cooperative Extension serve people of all ages regardless of socioeconomic level, race, color, sex, religion, handicap or national origin.Issued in furtherance of Cooperative Extension Work in Agriculture and Home Economics, Acts of Congress of May 8, 1914, as amended, and June 30, 1914, in cooperation with the United States Department ofAgriculture. Edward G. Smith, Director, Texas Cooperative Extension, The Texas A&M University System.1500, New
The herbicide control recommendations contained in this update for a specific weed . Formula 40, Hi-Dep, Weedone LV4, Esteron 99 and others concentration varies depending on product Dicamba 3,6-dichloro-2-methoxybenzoic acid Banvel, Clarity, Vision 4 lbs./gal. . **Aquatic label. Page Weed Controlled
