Herbicide label
Pemex
Pemex (EPA 91234-168) is a Group 2 imazethapyr herbicide labeled for 9 crops. The label lists 94 controlled weeds, plus partial-control, suppression, and partner-control categories.
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Pemex label facts
- Product Pemex
- EPA Reg. No. 91234-168
- Registrant Atticus, LLC
- Active ingredient imazethapyr
- MOA group 2
Crops on the Pemex label
Pemex is labeled for these 9 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 Pemex label
The Pemex label names 126 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 control94- alligatorweed
- anoda, spurred
- jerusalem artichoke
- barnyardgrass, common
- bedstraw, catchweed
- beet, wild
- starbur, bristly
- buckwheat, wild
- buffalobur
- carpetweed
- chickweed, common
- chickweed, mouseear
- cocklebur, common
- crabgrass, large
- crabgrass, smooth
- cupgrass, woolly
- devil's claw
- filaree, redstem
- filaree, whitestem
- fleabane, rough
- flixweed
- foxtail, giant
- foxtail, green
- foxtail, robust purple
- foxtail, robust white
- foxtail, yellow
- galinsoga
- goosefoot, nettleleaf
- henbit
- jimsonweed
- johnsongrass, seedling
- knotweed, prostrate
- kochia
- lambsquarters, common
- miner's lettuce
- mallow, common
- mallow, little
- marshelder
- millet, wild-proso
- morningglory, entireleaf
- morningglory, ivyleaf
- morningglory, pitted
- morningglory, smallflower
- morningglory, tall
- mustard spp.
- mustard, black
- mustard, tumble
- mustard, wild
- nettle, burning
- nightshade, black
- nightshade, eastern black
- nightshade, hairy
- nutsedge, purple
- nutsedge, yellow
- pennycress, field
- pepperweed, field
- pepperweed, virginia
- pigweed, redroot
- pigweed, smooth
- pigweed, spiny
- poinsettia, wild
- puncturevine
- purslane, common
- pusley, florida
- radish, wild
- ragweed, common
- ragweed, giant
- redmaids
- red rice
- rocket, london
- rocket, yellow
- rockpurslane, desert
- shattercane
- shepherd's-purse
- sida, prickly
- signalgrass, broadleaf
- smartweed, ladysthumb
- smartweed, pennsylvania
- smartweed, swamp
- sorghum, almum
- spurge, petty
- spurge, prostrate
- spurge, spotted
- spurge, toothed
- spurry, corn
- sunflower, annual
- swinecress
- tansymustard, green
- tansymustard, pinnate
- thistle, russian
- velvetleaf
- wartcress, creeping
- watercress
- willowleaf, panicle-leaf
Suppression
suppression26- barley
- bluegrass, annual
- brome
- canarygrass, littleseed
- hoary cress
- dandelion
- dock, broadleaf
- dock, curly
- dodder
- fescue
- fiddleneck
- goosegrass
- groundsel, common
- rhizome johnsongrass
- mallow, venice
- oat, volunteer
- wild oats
- orchardgrass
- oxtongue, bristly
- panicum, fall
- panicum, texas
- quackgrass
- sage, barnyard
- thistle, canada
- timothy
- volunteer wheat
Controls with a tank-mix partner
needs partner9- corn, volunteer
- goosegrass
- junglerice
- panicum, fall
- panicum, texas
- pigweed spp.
- sprangletop, red
- waterhemp, common
- witchgrass
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
Pemex 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 and your soil texture.
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, the rotational crop, and your state, region, and rainfall — some intervals differ in AL, AR, AZ, CA, CO, DE, FL, GA, IA, ID, IL, IN, KS, KY, LA, MD, MI, MN, MO, MS, MT, NC, ND, NE, NJ, NM, NV, NY, OH, OK, OR, PA, SC, SD, TN, TX, UT, VA, WA, WI, WV, and WY.
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.
Pemex FAQ
What weeds does Pemex control?
The Pemex label names 126 weeds, including alligatorweed, spurred anoda, jerusalem artichoke, common barnyardgrass, catchweed bedstraw, and wild beet. Control varies by crop, rate, and timing.
What crops is Pemex labeled for?
Pemex is labeled for 9 crops and uses, including soybeans, peanut, alfalfa, clover, and chickpea.
What is the active ingredient in Pemex? Is it a generic?
Pemex's active ingredient is imazethapyr (MOA Group 2). 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 Pemex?
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 Pemex?
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 Pemex 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.