Herbicide label
Optogen Herbicide Label
Optogen (EPA 100-1465) is a Group 27 bicyclopyrone herbicide labeled for 1 crops. The label lists 16 controlled weeds, plus partial-control, suppression, and partner-control categories.
“Optogen is a systemic preemergence and postemergence herbicide for the selective contact and residual control of broadleaf weeds.”
Optogen label facts
- Product Optogen
- EPA Reg. No. 100-1465
- Registrant Syngenta Crop Protection, LLC
- Active ingredient bicyclopyrone
- MOA group 27
Crops on the Optogen label
Optogen is labeled for these 1 crops and uses, per the EPA label.
Weeds on the Optogen label
The Optogen label names 33 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 control16- carpetweed
- galinsoga, hairy
- henbit
- jimsonweed
- kochia
- lambsquarters, common
- nightshade, eastern black
- pigweed, prostrate
- pigweed, redroot
- pigweed, smooth
- purslane, common
- purslane, horse
- ragweed, common
- ragweed, giant
- thistle, russian
- velvetleaf
Partial control
partial17- amaranth, palmer
- barnyardgrass, common
- chickweed, common
- cocklebur, common
- crabgrass, large
- crabgrass, smooth
- foxtail, giant
- foxtail, yellow
- goosegrass
- ladysthumb
- mallow, venice
- morningglory, entireleaf
- morningglory, ivyleaf
- mustard, wild
- panicum, fall
- smartweed, pennsylvania
- waterhemp, common
Optogen 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.
Optogen FAQ
What weeds does Optogen control?
The Optogen label names 33 weeds, including carpetweed, hairy galinsoga, henbit, jimsonweed, kochia, and common lambsquarters. Control varies by crop, rate, and timing.
What crops is Optogen labeled for?
Optogen is labeled for 1 crops and uses, including sweet potato.
What is the active ingredient in Optogen? Is it a generic?
Optogen's active ingredient is bicyclopyrone (MOA Group 27). 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.