Herbicide label
Cobra Herbicide Label
Cobra (EPA 59639-34) is a Group 14 lactofen herbicide labeled for 3 crops. The label lists 57 controlled weeds, plus partial-control, suppression, and partner-control categories.
“Cobra Herbicide is a broad spectrum contact herbicide for postemergence directed control of broadleaf weeds in kenaf.”
Cobra label facts
- Product Cobra
- EPA Reg. No. 59639-34
- Registrant Valent U. S. A. LLC
- Active ingredient lactofen
- MOA group 14
Crops on the Cobra label
Cobra is labeled for these 3 crops and uses, per the EPA label.
Weeds on the Cobra label
The Cobra label names 68 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 control57- amaranth, palmer
- amaranth, spiny
- balloonvine
- beggarticks, devils
- beggarweed, florida
- buffalobur
- burcucumber
- carpetweed
- cocklebur, common
- copperleaf, hophornbeam
- copperleaf, virginia
- crotalaria, showy
- croton, tropic
- croton, woolly
- devil's-claw
- eclipta
- galinsoga, hairy
- groundcherry, cutleaf
- groundcherry, lanceleaf
- jimsonweed
- kochia
- lambsquarters, common
- mallow, venice
- morningglory, purple
- morningglory, cypressvine
- morningglory, entireleaf
- morningglory, ivyleaf
- morningglory, palmleaf
- morningglory, pitted
- morningglory, smallflower
- morningglory, tall
- mustard, wild
- nightshade, black
- nightshade, eastern black
- nightshade, hairy
- pigweed, prostrate
- pigweed, redroot
- pigweed, smooth
- poinsettia, wild
- poorjoe
- puncturevine
- purslane, common
- pusley, florida
- ragweed, common
- ragweed, giant
- sage, lanceleaf
- sesbania, hemp
- sida, prickly
- smellmelon
- spurge, prostrate
- spurge, spotted
- spurge, toothed
- starbur, bristly
- sunflower, annual
- texasweed
- waterhemp, common
- witchweed
Suppression
suppression11- anoda, spurred
- milkweed, climbing
- milkweed, common
- morningglory, bigroot
- redvine
- senna, coffee
- smartweed, pennsylvania
- smartweed, swamp
- thistle, canada
- trumpetcreeper
- velvetleaf
Cobra 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.
Cobra FAQ
What weeds does Cobra control?
The Cobra label names 68 weeds, including palmer amaranth, spiny amaranth, balloonvine, devils beggarticks, florida beggarweed, and buffalobur. Control varies by crop, rate, and timing.
What crops is Cobra labeled for?
Cobra is labeled for 3 crops and uses, including soybeans, cotton, and peanut.
What is the active ingredient in Cobra? Is it a generic?
Cobra's active ingredient is lactofen (MOA Group 14). Other products list the same active ingredient; rates, formulations, and labeled crops differ — verify each on its own label.
Sources
Last updated 2026-09-30.