Herbicide label
COLT AS
COLT AS (EPA 34704-1019) is a Group 4 clopyralid and fluroxypyr 1-methylheptyl ester herbicide labeled for 7 crops. The label lists 60 controlled weeds, plus partial-control, suppression, and partner-control categories.
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COLT AS label facts
- Product COLT AS
- EPA Reg. No. 34704-1019
- Registrant Loveland Products, Inc.
- Active ingredient clopyralid and fluroxypyr 1-methylheptyl ester
- MOA group 4
Crops on the COLT AS label
COLT AS is labeled for these 7 crops and uses, per the EPA label.
Need the rate or timing for one of these? Filter every label by your crop, free.
Weeds on the COLT AS label
The COLT AS label names 75 weeds and rates each by how the product handles it: full control, partial control, suppression, or control with a tank-mix partner. A weed can fall at more than one level, because control varies by crop, rate, and timing.
Controls
full control60- jerusalem artichoke
- beans, volunteer
- bedstraw, catchweed
- black medic
- buckwheat, wild
- burdock
- chamomile, false
- chickweed
- clover, hop
- clover, red
- sweetclover
- clover, white
- cocklebur, common
- coffeeweed
- cornflower
- daisy, oxeye
- dandelion
- dock, curly
- dogbane, hemp
- volunteer flax
- galinsoga
- grape
- groundsel, common
- hawksbeard, narrowleaf
- hawkweed, orange
- hawkweed, yellow
- horseweed
- jimsonweed
- kochia
- lentils, volunteer
- prickly lettuce
- locoweed, lambert
- locoweed, white
- mallow, venice
- marshelder
- mayweed
- morningglory
- nightshade, black
- nightshade, cutleaf
- nightshade, eastern black
- nightshade, hairy
- peas, volunteer
- pineapple-weed
- puncturevine
- purslane, common
- ragweed, common
- ragweed, giant
- salsify, meadow
- sicklepod
- sorrel, red
- sowthistle, annual
- starthistle, yellow
- sunflower
- teasel, common
- thistle, bull
- thistle, canada
- thistle, musk
- velvetleaf
- vetch
- wormwood, biennial
Suppression
suppression15- alfalfa
- bindweed, field
- buffalobur
- volunteer canola
- horsetail, field
- knapweed, russian
- knotweed
- ladysthumb
- mallow, common
- mustard
- pennycress, field
- potato, volunteer
- smartweed, green
- sowthistle, perennial
- thistle, russian
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
COLT AS rates and plant-back
The label answers both with a table, not a single number. Here is what drives each answer.
Application rate
Your rate depends on your crop.
Get the rate for your field: build a program and FieldMarshal gives you the exact per-acre rate for your crop from the label line.
Plant-back and rotation
Your interval depends on your application rate and the rotational crop.
Get the interval for your rotation: build a program and FieldMarshal gives you the exact plant-back for your rotational crop from the label line.
COLT AS FAQ
What weeds does COLT AS control?
The COLT AS label names 75 weeds, including jerusalem artichoke, volunteer beans, catchweed bedstraw, black medic, wild buckwheat, and burdock. Control varies by crop, rate, and timing.
What crops is COLT AS labeled for?
COLT AS is labeled for 7 crops and uses, including field corn, wheat, barley, oats, and sweet corn.
What is the active ingredient in COLT AS? Is it a generic?
COLT AS's active ingredient is clopyralid and fluroxypyr 1-methylheptyl ester (MOA Group 4). Other products list the same active ingredient; rates, formulations, and labeled crops differ — verify each on its own label.
What's the plant-back interval after COLT AS?
It depends on your rotational crop, application rate, and region, so the label gives a table, not one number. Build a program and FieldMarshal gives you the exact interval for your rotation from the label line, so you can verify it.
Build a program →Can I tank-mix COLT AS?
It depends on your target weeds, crop stage, and which partners the label approves. Build a program and FieldMarshal checks the label for approved partners and gives the condition on each, so you can verify it.
Build a program →Plan in minutes, not hours.
Start with COLT AS and let FieldMarshal build a defensible herbicide program for your field, every product, rate, and plant-back cross-referenced and checked against the label.
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Sources
Last updated 2026-07-14.