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2009 Weed Control Guide
for Vegetable Crops
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CROP INFORMATION
Asparagus
Beans
Beets
Broccoli
Brussels Sprouts
Cabbage
Carrot
Cauliflower
Celery
Chicory
Chinese Vegetables
Collards
Corn
Cucumber
Dill
Eggplant
Endive
Escarole
Garlic
Horseradish
Kale
Kohlrabi
Leek
Lettuce
Mint
Muskmelon
Mustard
Okra
Onion
Parsley
Parsnip
Peas
Pepper
Potato
Pumpkin
Radish
Rhubarb
Rutabaga
Spinach
Squash
Strawberry
Sweet Potato
Swiss Chard
Tomato
Turnip
Turnip Greens
Watermelon
Non-crop Land
CORN (Sweet or Pop)
| Weed Problem | Chemical | Pounds Active Ingredient (AI)/Acre | Amount of Commercial Product/Acre |
Remarks and Limitations Items in bold have changed since the printed bulletin. |
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| Emerged annuals | paraquat (GRAMOXONE MAX 3L) |
0.49 | 1.3 pt |
Apply before or after planting but before corn emerges to kill emerged weeds. RUP. | ||||
| Preemergence | acetachlor (HARNESS+ 7E) (SURPASS 6.4EC) |
0.8-3 | 0.9-3.4 pt 1-3.75 pt |
May be preplant incorporated or applied to surface after planting. Check label for rate for soil type. Controls many broadleaves and grasses. RUP. | ||||
| alachlor (MICRO-TECH 4E) |
2-4 | 2-4 qt |
Apply soon after planting and before weeds emerge. Controls primarily grasses. RUP. | |||||
| atrazine (AATREX 4L) |
1-2 | 1-2 qt |
Apply soon after planting. Observe rotation restrictions. RUP. | |||||
| dimethenamid-P (OUTLOOK 6E) |
0.56-0.98 | 12-21 fl oz |
Apply PPI or PRE. Check label for rate for soil type. Some hybrids may be sensitive. Controls many broadleaves, grasses and nutsedge. 50-day PHI. | |||||
| EPTC (ERADICANE 6.7E) |
4-6 | 4.75-7 pt |
Apply and incorporate in same pass. Most effective on light soils. Controls annual grass, nightshades, nutsedge. | |||||
| pendimethalin (PROWL 3.8ACS) |
0.7-1.9 | 0.25-2 pt |
Apply from early postemergence up to 24-inch tall corn. Use drop nozzles for better soil distribution. No activity on emerged weeds. Use low rate on light soil. Controls annual grasses, wild proso millet. | |||||
| s-metolachlor (DUAL MAGNUM 7.6E) |
1.2-1.9 | 1.3-2 pt |
Apply soon after planting and before weeds emerge. Controls primarily grasses. Some nutsedge activity. | |||||
| Preemergence and postemergence | mesotrione (CALLISTO) |
0.09-0.24 | 3-7.7 fl oz |
PREEMERGENCE: apply 6-7.7 fl oz after seeding. POSTEMERGENCE: apply 3 fl oz to corn up to 30 inch tall. Add 0.25% NIS. Most vegetable crops have an 18 month rotational restriction. Maximum 2 applications pre and post. 45-day PHI. | ||||
| Postemergence broadleaves | 2,4-D (WEEDAR 64 3.8L) |
0.5 | 1 pt |
SWEET CORN. Apply before sweet corn is 8 inches tall. Spray under low-wind conditions; drift can cause serious injury to adjacent crops. 2,4-D may injure some supersweet hybrids. | ||||
| bentazon (BASAGRAN 4L) |
0.75-1 | 1.5-2 pt |
Apply when weeds are small. Apply twice for nutsedge control. Include 1 qt COC/acre. | |||||
| bromoxynil (BUCTRIL 4EC) |
0.25-0.375 | 0.5-0.75 pt |
POPCORN only. Apply prior to tasseling of corn. Controls only broadleaves. 30-day PHI. | |||||
| carfentrazone (AIM 1.9EW) |
0.008 | 0.5 oz |
Use in tank mix with other post herbicides. Controls morning glory, lambsquarters, pigweed, velvetleaf. Some sweet corn cultivars are sensitive to Aim. Add 0.5 pt NIS/acre. | |||||
| clopyralid (STINGER 3L) |
0.125-0.25 | 5.3-10.6 fl oz |
SWEET, POP CORN. Apply before sweet corn is 18-inches tall or popcorn is 24-inches tall. Kills composite weeds, legumes, nightshade. Maximum 2 applications and 2/3 pt/acre/year. 30-day PHI. | |||||
| diflufenzopyr + dicamba (DISTINCT 70SP) |
0.18-0.26 | 4-6 oz |
POPCORN. Apply 6-oz early postemergence or 4 oz mid-postemergence. Include 0.25% NIS. Controls many broadleaves, including hemp dogbane and common milkweed. 72-day PHI. | |||||
| fluroxypyr (STARANE ULTRA 2.8 L) |
0.14 | 0.4 pt |
SWEET CORN: Broadcast to corn up to V4 stage. Apply to larger corn with drop nozzles. Controls several broadleaves. Some hybrids may be sensitive. 31 day PHI. | |||||
| fluthiacet-methyl (CADET 0.91 L) |
0.004-0.006 | 0.6-0.9 fl oz |
Controls velvetleaf and several other broadleaves. Apply from 2 collars to tasseling. Maximum 1.25 fl oz/acre/yr. Add COC or NIS. 40 day PHI | |||||
| halosulfuron (PERMIT 75WSG) (SANDEA 75W) |
0.032-0.047 | 0.67-1 oz 0.67-1 oz |
Apply to corn from spike to layby stage. If needed, make a second application as a directed spray. Include 0.25% NIS. Do not apply to Jubilee sweet corn or any corn under stress. Controls nutsedge. Observe rotational restrictions. 30 day PHI | |||||
| topramezone (IMPACT 2.8 L) |
0.0164 | 0.75 fl oz |
Apply to weeds up to 4 inches high; include 1% COC or MSO plus 1.25% UAN or 10-15 lb AMS per acre. Most vegetable crops have an 18 month rotational restriction. 45 day PHI. | |||||
| Postemergence grasses and broadleaves | foramsulfuron (OPTION 3.5 WDG) |
0.033-0.038 | 1.5-1.75 oz |
Apply to corn in V1-V6 stage, as broadcast or with drop nozzles. Add an adjuvant and nitrogen source. Controls many grasses and broadleaves. 60 day rotational restriction for most crops. 45 day PHI. | ||||
| nicosulfuron (ACCENT 75SP) |
0.031 | 0.67 oz |
POP, SWEET. Apply broadcast to sweet corn up to 12 inches tall or apply to corn 12-18 inches tall or 6 collars using drop nozzles. One application/year. Some corn hybrids are sensitive to Accent. Controls several grasses and broadleaves. Add 0.25% NIS. | |||||
| primisulfuron (BEACON 75DG) |
0.036 | 0.76 oz |
POPCORN. Apply to corn 4-20 in. or taller. Beacon may injure popcorn. Controls some broadleaves and grasses. Add 0.25% NIS. 60-day PHI. | |||||
| tembotrione (LAUDIS 3.5 SC) |
0.082 | 3 fl oz |
Apply from emergence to V7 stage. Controls most grasses and broadleaves. Add an adjuvant and nitrogen source. Most vegetable crops have an 18 month rotational restriction. | |||||