Section 6 Table of Contents

Table 2.6-1. Forage and pasture herbicides, their characteristics and restrictions.

Trade name5 Common name Manufacturer Crop Family Mode of action Site of action
2,4-D 4 lb/gal 2,4-D Several grass Phenoxy Plant growth regulator Multiple
Batan 60DF benefin UAP legume Dinitroaniline Seedling growth inhibitor (root) Tubulin protein
Buctril 2E bromoxynil Aventis legume Nitrile Photosynthesis inhibitor D-1 quinone
Butyrac 200 2E 2,4-DB Aventis legume Phenoxy Plant growth regulator Multiple
Chateau 51WDG flumioxazin Valent alfalfa Dicarboximide Cell membrane disrupter (contact) PPO
Cimarron Plus 63WDG metsulfuron + chlorsulfuron DuPont grass Sulfonylureas Amino acid biosynthesis inhibitor (protein) ALS synthase
Cimmarron Max (co-pack) metsulfuron + 2,4-D + dicamba DuPont grass Sulfonylurea + phenoxy + benzoic acid Amino acid biosynthesis inhibitor (protein) + plant growth regulator ALS + multiple
Clarity 4S/Banvel 4S dicamba MicroFlo / BASF grass Benzoic acid Plant growth regulator Multiple
Crossbow 3E 2,4-D + trichlopyr Dow AgroSciences grass Phenoxy + pyridine Plant growth regulator Multiple
Curtail 2.38L clopyralid + 2,4-D Dow AgroSciences grass Pyridine + phenoxy Growth regulator Multiple
Eptam 7E/10G EPTC Syngenta legume Thiocarbamate Seedling growth inhibitor (shoot) Multiple
ForeFront 3E aminopyralid + 2,4-D Dow AgroSciences grass Pyridine + phenoxy Growth regulator Multiple
Gramoxone Inteon 2S paraquat Syngenta legume Bipyridilium Cell membrane disrupter Photo-system I
Kerb 50W pronamide Dow AgroSciences legume Amide Seedling growth inhibitor (shoot) Several
MCPA 4 lb/gal MCPA Several grass / legume Phenoxy Plant growth regulator Multiple
Metsulfuron metsulfuron-methyl Several grass Sulfonylurea Amino acid biosynthesis inhibitor (protein) ALS synthase
Milestone 2E aminopyralid Dow AgroSciences grass Pyridine Growth regulators Multiple
Outrider 75WDG sulfosulfuron Monsanto grass Sulfonylurea Amino acid biosynthesis ALS synthase
Overdrive 70WDG dicamba + diflufenzopyr BASF grass Benzoic acid Plant growth regulator Multiple
Poast Plus 1E/Poast 1.5E sethoxydim BASF legume Cyclohexanediones Fatty acid biosynthesis inhibitor ACCase
Prowl H2O 3.8CS pendimethalin BASF alfalfa Dinitroaniline Seedling growth inhibitor (root) Tubulin protein
Pursuit 2S/70DG imazethapyr BASF alfalfa / grass Imidazolinone Amino acid biosynthesis inhibitor (protein) ALS synthase
Raptor 1S imazamox BASF legume Imidazolinone Amino acid biosynthesis inhibitor (protein) ALS synthase
Redeem R&P 3L clopyralid + triclopyr Dow AgroSciences grass Pyridines Growth regulator multiple
Remedy Ultra 4E triclopyr Dow AgroSciences grass Pyridine Plant growth regulator Multiple
Roundup 3S/Roundup WeatherMax 4.5S/glyphosate4 glyphosate Monsanto / others grass or legume Amino acid derivative Amino acid biosynthesis inhibitor (protein) EPSP synthase
Select clethodim Valent legume Cyclohexanediones Fatty acid biosynthesis inhibitor ACCase
Sencor 75DF/4L metribuzin Bayer legume Triazine Photosynthesis inhibitor D-1 quinone
Sinbar 80W terbacil DuPont legume Uracil Photosynthesis inhibitor D-1 quinone
Spike 20P/40P tebuthiuron Dow AgroSciences grass Urea Photosynthesis inhibitor D-1 quinone
Stinger 3S clopyralid Dow AgroSciences grass Pyridine Growth regulator Multiple
Touchdown Total 4S4 glyphosate Syngenta legume Amino acid derivative Amino acid biosynthesis inhibitor (protein) EPSP synthase
Velpar 2L/90DF hexazinone DuPont legume Triazine Photosynthesis inhibitor D-1 quinone
Velpar AlfaMax 77.7WDG hexazinone + diuron DuPont alfalfa Triazine + urea Photosynthesis inhibitors D-1 quinone

Table 2.6-1. (cont.)
Trade name Restricted-use pesticide¹ Water quality advisory² Worker reentry³ (hr)
2,4-D 4 lb/gal — — 12–48
Batan 60DF — — 12
Buctril 2E — — 12
Butyrac 200 2E — yes 48
Chateau 51WDG — — 12
Cimarron Plus 63WDG — — 4
Cimmarron Max (co-pack) — — 48
Clarity 4S/Banvel 4S — — 24
Crossbow 3E — yes 48
Curtail 2.38L — — 48
Eptam 7E/10G — — 12
ForeFront 3E — — 48
Gramoxone Inteon 2S yes — 12
Kerb 50W yes — 12
MCPA 4 lb/gal — — 12–48
Metsulfuron — — 4
Milestone 2E — — 12
Outrider 75WDG — — 12
Overdrive 70WDG — — 12
Poast Plus 1E/Poast 1.5E — — 12
Prowl H2O 3.8CS — — 24
Pursuit 2S/70DG — — 12
Raptor 1S — — 4
Redeem R&P 3L — — 48
Remedy Ultra 4E — yes 48
Roundup 3S/Roundup WeatherMax 4.5S/glyphosate4 — — 4–12
Select — — 12
Sencor 75DF/4L — yes 12
Sinbar 80W — — 12
Spike 20P/40P — yes —
Stinger 3S — yes 12
Touchdown Total 4S4 — — 12
Velpar 2L/90DF — — 24
Velpar AlfaMax 77.7WDG — — 24
  1. Only licensed applicators may purchase and apply restricted-use pesticides. To become licensed, contact the Pennsylvania Department of Agriculture.
  2. These herbicides have properties that may result in ground or surface water contamination. Do not apply them in areas where soils are permeable or coarse and groundwater is near the surface. Practices should be followed to minimize the potential for dissolved runoff and/or runoff erosion. See the herbicide label for specific restrictions.
  3. If soil-applied products are injected or incorporated at application time, under certain circumstances the Worker Protection Standard allows workers to enter the treated area if they will have no contact with anything that has been treated. Personal protective equipment is required for early entry to treated areas if contact with treated soil, plants, or water is involved.
  4. Various formulations available. See Table 2.2-1a. Refer to product label application rates and other restrictions.
  5. Generic alternatives to some of these products are available. See Table 2.2-1b for details.