Herbicide label
Parallel
Parallel (EPA 66222-87) is a Group 15 metolachlor herbicide labeled for 11 crops. The label lists 26 controlled weeds, plus partial-control, suppression, and partner-control categories.
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Parallel label facts
- Product Parallel
- EPA Reg. No. 66222-87
- Registrant Makhteshim Agan of North America, Inc. d/b/a ADAMA
- Active ingredient metolachlor
- MOA group 15
Crops on the Parallel label
Parallel is labeled for these 11 crops and uses, per the EPA label.
- field corn
- soybean
- cotton
- potato
- peanut
- sorghum
- corn silage
- dry edible bean
- field pea
- cowpea
- safflower
Need the rate or timing for one of these? Filter every label by your crop, free.
Weeds on the Parallel label
The Parallel label names 64 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 control26- barnyardgrass, common
- foxtail, bristly
- carpetweed
- waterhemp, common
- crabgrass
- crowfootgrass
- nightshade, eastern black
- panicum, fall
- pusley, florida
- foxtail, millet
- galinsoga
- foxtail, giant
- goosegrass
- foxtail, green
- pigweed
- cupgrass, prairie
- red rice
- foxtail, robust purple
- foxtail, robust white
- signalgrass
- cupgrass, southwestern
- millet, wild-proso
- witchgrass
- cupgrass, woolly
- foxtail, yellow
- nutsedge, yellow
Partial control
partial11- purslane, common
- eclipta
- beggarweed, florida
- nightshade, hairy
- sandbur
- johnsongrass, seedling
- shattercane
- panicum, texas
- sorghum, volunteer
- millet, wild-proso
- cupgrass, woolly
Controls with a tank-mix partner
needs partner35- cupgrass, woolly
- millet, wild-proso
- panicum, browntop
- cocklebur, common
- purslane, common
- nightshade, hairy
- lambsquarters
- morningglory
- ragweed, giant
- smartweed
- velvetleaf
- jimsonweed
- kochia
- mustard
- sida, prickly
- junglerice
- wild oats
- morning glory, annual
- groundcherry
- mallow
- coffeeweed
- spurge, spotted
- spurge, hyssop
- spurge, nodding
- spurge, prostrate
- panicum, texas
- sandbur, field
- johnsongrass, seedling
- spurge, annual
- sesbania, hemp
- mallow, venice
- mustard, wild
- stinging nettle
- goosegrass, DNA-resistant
- bindweed, field
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
Parallel 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, CO, CT, DE, FL, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NY, OH, OK, PA, RI, SC, SD, TN, TX, UT, VA, VT, 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.
Parallel FAQ
What weeds does Parallel control?
The Parallel label names 64 weeds, including common barnyardgrass, bristly foxtail, carpetweed, waterhemp, crabgrass, and crowfootgrass. Control varies by crop, rate, and timing.
What crops is Parallel labeled for?
Parallel is labeled for 11 crops and uses, including field corn, soybeans, cotton, potato, and peanut.
What is the active ingredient in Parallel? Is it a generic?
Parallel's active ingredient is metolachlor (MOA Group 15). 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 Parallel?
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 Parallel?
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 Parallel and let FieldMarshal build a defensible herbicide program for your field, every product, rate, and plant-back cross-referenced and checked against the label.
Free account and label filter. Building a program is paid, metered by use, so you pay only for what you build.
Sources
Last updated 2026-07-14.