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2009 Weed Control Guide
for Vegetable Crops
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Environmental Protection and Herbicide Use
Herbicide formulations, sources, toxicity, runoff, leaching potential and REI
Effectiveness of preplant incorporated and preemergence herbicides on weeds
Table 1. Herbicide formulations, sources, toxicity, runoff and leaching potential, and REI.
| Common Name | Trade Name and Manufacturer (1) | Formulations | Runoff / Leaching Potential (2) |
LD50 mg / kg (3) | REI (4) | |
| Oral | Dermal | |||||
| 2,4-D | FORMULA 40 (Riverdale) | 3.8L | 3/2 | 866-1058 | >2000 | 48 hrs |
| WEEDAR 64 (Nufarm) | 3.8L | 3/2 | 1161 | 1544 | 48 hrs | |
| 2,4-D+triclopyr | CROSSBOW (DowAgroSciences) | 3L | 2/2 | 1000-2590 | >5000 | 0 hrs |
| * acetachlor | HARNESS (Monsanto) | 7E | 3/2 | 1849 | >5000 | 12 hrs |
| SURPASS (DowAgroSciences) | 6.4E | 3/2 | 1426-1942 | >2240 | 12 hrs | |
| * alachlor | MICRO-TECH (Monsanto) | 4E | 3/2 | >5000 | >2000 | 12 hrs |
| * atrazine | several | 4L | 2/1 | 1075-1886 | >5000 | 12 hrs |
| bensulide | PREFAR (Gowan) | 4E | 1/2 | 704-819 | >2000 | 12 hrs |
| bentazon | BASAGRAN (Arysta) | 4SL | 3/1 | 1000-2000 | >4000 | 48 hrs |
| bromacil | HYVAR X (DuPont) | 80W | 2/1 | 1300-2000 | >2000 | 12 hrs |
| bromoxynil | BUCTRIL (Bayer Crop Science) | 4E | 2/3 | 505-780 | >2000 | 24 hrs |
| carfentrazone | AIM (FMC) | 1.9EW | 3/3 | 4077 | >4000 | 12 hrs |
| clethodim | SELECT MAX (Valent) | 0.97E | 3/3 | >5000 | >5000 | 24 hrs |
| clomazone | COMMAND (FMC) | 3ME | 3/2 | >5000 | >5000 | 12 hrs |
| clopyralid | CLOPYR AG (United Phosphorus) | 3L | 3/1 | >5000 | >2000 | 12 hrs |
| STINGER (DowAgroSciences) | 3L | 3/1 | >5000 | >5000 | 12 hrs | |
| cycloate | RO-NEET (Helm) | 6E | 3/2 | 3140-3690 | >4640 | 12 hrs |
| dicamba | BANVEL (Arysta), CLARITY (BASF) | 4L | 3/1 | 2629-3512 | >2000 | 24 hrs |
| dimethenamid-P | OUTLOOK (BASF) | 6E | 3/2 | 695 | >2000 | 12 hrs |
| diquat | REGLONE (Syngenta) | 2L | 1/3 | 886 | >5000 | 24 hrs |
| diuron | KARMEX, DIREX (DuPont) | 80DF | 2/2 | >5000 | >2000 | 12 hrs |
| EPTC | ERADICANE (Gowan) | 6.7E | 3/3 | 2000-2875 | >4000 | 12 hrs |
| EPTAM (Gowan) | 7E | 3/3 | 1325 | 2750 | 12 hrs | |
| ethalfluralin | CURBIT (UAP) | 3E | 1/3 | 3000 | >5000 | 24 hrs |
| ethofumesate | NORTRON (Bayer CropSciences) | 4SC | 0/0 | 0 hrs | ||
| fluazifop-P | FUSILADE DX (Syngenta) | 2E | 2/3 | >5000 | >2000 | 12 hrs |
| flumioxazin | CHATEAU (Valent) | 51WDG | 2/3 | >5000 | >2000 | 12 hrs |
| fluroxypyr | STARANE ULTRA (DowAgroSciences) | 2.8L | 3/2 | >5000 | >5000 | 24 hrs |
| fluthiacet-methyl | CADET (FMC) | 0.91EC | 3/3 | 2537 | >2020 | 12 hrs |
| fomesafen | REFLEX (Syngenta) | 2E | 2/1 | 6950 | >1000 | 24 hrs |
| foramsulfuron | OPTION (Bayer CropScience) | 35WDG | 3/2 | 3881 | >5000 | 12 hrs |
| fosamine | KRENITE (DuPont) | 4L | 3/3 | >5000 | >5000 | 12 hrs |
| glufosinate | RELY 200 (Bayer Crop Science) | 1.67L | 3/3 | 1920-2170 | 1380-1400 | 12 hrs |
| glyphosate | ROUNDUP (Monsanto) | 4L | 1/3 | >5000 | >5000 | 12 hrs |
| TOUCHDOWN (Syngenta) | 4L | 1/3 | >5000 | >5000 | 12 hrs | |
| halosulfuron | SANDEA (Gowan) | 75WDG | 3/2 | 1287 | >5000 | 12 hrs |
| PERMIT (Gowan) | 75WDG | 3/2 | 1287 | >5000 | 12 hrs | |
| hexazinone | VELPAR (DuPont) | 90SP | 2/1 | 4120 | >5000 | 24 hrs |
| imazapyr | ARSENAL (BASF) | 2AS | 2/1 | >5000 | >5000 | 12 hrs |
| imazethapyr | PURSUIT (BASF) | 2L | 2/1 | >5000 | >5000 | 12 hrs |
| linuron | LOROX (DuPont) | 50DF | 2/2 | 4060-4833 | >2000 | 24 hrs |
| MCPB | THISTROL (Nufarm) | 2L | 3/3 | 4738 | >2000 | 12 hrs |
| mesotrione | CALISTO (Syngenta) | 4L | 3/3 | >5000 | >5000 | 12 hrs |
| metrlbuzin | SENCOR (Bayer Crop Science) | 75DF | 3/1 | 1449-2365 | >5000 | 12 hrs |
| napropamide | DEVRINOL (United Phosphorus) | 50DF | 2/2 | >5000 | >5000 | 12 hrs |
| naptalam | ALANAP (Chemtura) | 2L | 3/3 | >5000 | >20000 | 48 hrs |
| nicosulfuron | ACCENT (DuPont) | 75WDG | 3/1 | >5000 | >2000 | 4 hrs |
| norflurazon | SOLICAM (Syngenta) | 80DF | 2/2 | 1140 | >2000 | 12 hrs |
| oryzalin | SURFLAN (United Phosphorus) | 4AS | 3/3 | 5000 | >5000 | 24 hrs |
| oxyfluorfen | GOALTENDER (DowAgroSciences) | 4SC | 2/3 | 2985-4594 | >4000 | 24 hrs |
| GOAL XL (DowAgroSciences) | 2E | 0/0 | 2985-4594 | >4000 | 24 hrs | |
| * paraquat | GRAMOXONE MAX (Syngenta) | 3L | 1/3 | 310 | >2000 | 24 hrs |
| FIRESTORM (Chemtura) | 3L | 1/3 | 283 | >2000 | 24 hrs | |
| pendimethalin | PROWL H20 (BASF) | 3.8CS | 1/3 | 3956 | >2000 | 24 hrs |
| PROWL (BASF) | 3.3E | 1/3 | 3956 | >2000 | 24 hrs | |
| phenmedipham | SPIN-AID (Bayer Crop Science) | 1.3E | 2/3 | 4000 | >8700 | 24 hrs |
| primisulfuron | BEACON (Syngenta) | 75DG | 3/1 | >5050 | >2010 | 12 hrs |
| prometryn | CAPAROL (Syngenta) | 4L | 2/2 | >5000 | >5000 | 24 hrs |
| * pronamide | KERB (DowAgroSciences) | 50W | 2/1 | >5000 | >10000 | 24 hrs |
| pyrazon | PYRAMIN (Arysta) | 68DF | 3/2 | 1160 | >2000 | 12 hrs |
| quizalofop | ASSURE II (DuPont) | 0.88E | 1/2 | 4100-5900 | >2000 | 12 hrs |
| rimsulfuron | MATRIX (DuPont) | 25DF | 3/2 | >5000 | >2000 | 4 hrs |
| sethoxydim | POAST (BASF) | 1.5E | 3/3 | 4100 | >5000 | 12 hrs |
| s-metolachlor | DUAL-MAGNUM (Syngenta) | 7.6E | 2/1 | 3425 | >2000 | 24 hrs |
| sulfentrazone | SPARTAN (FMC) | 4F | 2/1 | 2084 | >2000 | 12 hrs |
| sulfometuron | OUST (DuPont) | 75DG | 3/2 | >5000 | >5000 | 4 hrs |
| tembotrione | LAUDIS (Bayer CropScience) | 3.5SC | 0/0 | 1750 | >5000 | 12 hrs |
| terbacil | SINBAR (Tessenderlo Kerly, Inc.) | 80W | 2/1 | 500-2784 | >5000 | 12 hrs |
| topramezone | IMPACT (AMVAC) | 2.8L | 0/0 | 0 hrs | ||
| triclopyr | GARLON (DowAgroSciences) | 4L | 2/1 | 1338-1581 | >2000 | 12 hrs |
| trifluralin | TREFLAN (DowAgroSciences) | 4E | 1/3 | 3799 | >5000 | 12 hrs |
| several ( .) | 4E | 1/3 | 3700 | >5000 | 12 hrs | |
(1) Trade names and formulations of herbicides are given for the convenience of the users. Other formulations of the same herbicides or other herbicides with the same active ingredients also may be labeled for use on certain crops. The mention of trade names does not imply that they are endorsed or recommended over those of similar nature not listed.
(2) The runoff/leaching potential ratings are from the NRCS Field Office Technical Guide, Section II—Water Quality and Quantity Interpretations. 1 = large, 2 = medium, 3 = small.
(3) The LD 50 is a standard toxicological term that indicates the number of milligrams (mg) of pesticide per kilogram (kg) of test animal body weight required to kill 50 percent of a test animal population. Values less than 10 indicate extremely high toxicity to mammals. The LD 50 data were obtained from the Material Safety Data Sheets.
(4) REI = Restricted entry interval for the Worker Protection Standard. SL = see label.
• RESTRICTED-USE PESTICIDES. All or certain formulations of these herbicides have been classified as restricted-use pesticides (RUP) and are available only to certified applicators.