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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
PEAS
| 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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| Germinating or emerged broadleaves | imazethapyr (PURSUIT 2L) |
0.047 | 3 fl oz |
Apply PPI or PRE. Do not apply to peas treated with TrefIan.
POSTEMERGENCE: Apply 2-3 fl oz after 1 true leaf stage. Include 1 pt NIS/50 gal water. 30-day PHI. OBSERVE CROP ROTATION RESTRICTIONS. PURSUIT MAY CAUSE CARRYOVER INJURY. |
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| Emerged weeds | paraquat (GRAMOXONE MAX 3L) |
0.56-1 | 1.5-2.7 pt |
Apply before or after seeding but before crop emergence. Include 1 pt NIS/100 gal. RUP. | ||||
| Preemergence | clomazone (COMMAND 3ME) |
0.5 | 1.3 pt |
Apply to soil surface after planting. Use in combination with other herbicides to broaden weed control spectrum. Cover crops planted after pea harvest may suffer some stand reduction. | ||||
| pendimethalin (PROWL H20 3.8 ACS) |
0.71-1.4 | 1.5-3.0 pt |
Preplant incorporated only. | |||||
| s-metolachlor (DUAL MAGNUM 7.6E) |
0.95-1.9 | 1-2 pt |
Use lower rate on sandy soils with less than 3% organic matter. Apply preemergence only. Do not incorporate on English peas. | |||||
| trifluralin (TREFLAN 4E) |
0.5-0.75 | 1-1.5 pt |
Apply before planting. Incorporate 2-3 inches soon after spraying. Use lower rate on early plantings on sandy soils. | |||||
| Postemergence broadleaves, Canada thistle | MCPB (THISTROL (2 lb/gal)) |
0.5-1 | 1-2 qt |
Apply when peas have developed 6-12 nodes. Do not apply later than 3 nodes before pea flowering or yields may be reduced. Do not apply when peas are under stress or when temp. exceeds 90 F. | ||||
| Postemergence broadleaves, nutsedge | bentazon (BASAGRAN 4L) |
0.75-1 | 0.75-1 qt |
Apply after peas have 3 pairs of leaves. Two applications are needed for nutsedge and Canada thistle control. Do not exceed 2 qt/acre/year. Do not add COC on peas. 30-day PHI. | ||||
| Postemergence grasses | clethodim (SELECT MAX 0.97E) |
0.068-0.12 | 9-16 fl oz |
Include 0.25% NIS/acre. Maximum of 64 fl oz/acre/yr. 14 day PHI. | ||||
| quizalofop (ASSURE II 0.88E) (TARGA) |
0.04-0.08 | 6-12 fl oz 6-12 fl oz |
Apply to actively growing grasses in 10-20 gpa. Include 1 qt COC or 0.5 pt NIS/acre. 30-day PHI. | |||||
| sethoxydim (POAST 1.5E) |
0.19-0.28 | 1-1.5 pt |
Dry and succulent peas. Apply to actively growing grasses. Use high rate on perennial grasses. Maximum 4 pt/acre/year. Include 1 qt COC/acre. 15-day PHI for succulent peas and 30 days for dry peas. | |||||
| Perennials | glyphosate (ROUNDUP 4L) |
2 | 2 qt |
Apply in the fall or spring prior to planting. Include 1 pt NIS/acre. Wait 5 days before plowing. | ||||
PEAS (Southern)
| 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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| Germinating or emerged broadleaves | imazethapyr (PURSUIT 2L) |
0.063 | 4 fl oz |
Apply PPI or PRE after seeding.
POSTEMERGENCE: Apply when southern peas are at least 3 inches high. Include 1 pt NIS/50 gal water. 30-day PHI. OBSERVE CROP ROTATION RESTRICTIONS. PURSUIT MAY CAUSE SEVERE CARRYOVER INJURY. |
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| Preemergence | s-metolachlor (DUAL MAGNUM 7.6E) |
0.95-1.9 | 1-2 pt |
Use low rates on soils with less than 3% organic matter. Incorporate 1-2 inches before planting, or apply to soil after planting. | ||||
| trifluralin (TREFLAN 4E) |
0.5-1 | 1-2 pt |
Apply before planting and incorporate 2-3 inches. Use lower rate on sandy soils. | |||||
| Postemergence broadleaves, nutsedge | bentazon (BASAGRAN 4L) |
0.75-1 | 0.75-1 qt |
Apply after peas have 3 pairs of leaves to prevent injury. Two applications are needed for nutsedge and Canada thistle control. Do not apply more than 2 qt acre/year. Do not add COC on peas. | ||||
| Postemergence grasses | sethoxydim (POAST 1.5E) |
0.19-0.28 | 1-1.5 pt |
Use on all dry and succulent peas. Apply to actively growing grasses. Maximum 4 pt/acre/year. Include 1 qt COC/acre. 15-day PHI for succulent peas and 30-day PHI for dry peas. | ||||
| Emerged perennials | glyphosate (ROUNDUP 4L) |
2-3 | 2-3 qt |
Apply to emerged perennials before planting or after harvest. | ||||