Herbicide label
OpenSky
OpenSky (EPA 62719-721) is a Group 2 and 4 fluroxypyr 1-methylheptyl ester and pyroxsulam herbicide labeled for 4 crops. The label lists 50 controlled weeds, plus partial-control, suppression, and partner-control categories.
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OpenSky label facts
- Product OpenSky
- EPA Reg. No. 62719-721
- Registrant Corteva Agriscience
- Active ingredient fluroxypyr 1-methylheptyl ester and pyroxsulam
- MOA group 2 and 4
Crops on the OpenSky label
OpenSky is labeled for these 4 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 OpenSky label
The OpenSky label names 52 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 control50- foxtail barley
- barnyardgrass, common
- bedstraw, catchweed
- blackgrass
- bluegrass, bulbous
- brome, downy
- brome, japanese
- brome, ripgut
- buckwheat, wild
- canarygrass, hood
- canarygrass, littleseed
- volunteer canola
- mayweed, chamomile
- cheat
- chess, hairy
- chickweed, common
- chickweed, mouseear
- corn, volunteer
- darnel, persian
- falseflax, smallseed
- rattail fescue
- flixweed
- foxtail, green
- foxtail, yellow
- gromwell, corn
- hempnettle, common
- henbit
- kochia
- lambsquarters, common
- prickly lettuce
- mallow, common
- mustard, black
- mustard, blue
- mustard, tumble
- mustard, wild
- mustard, wormseed
- wild oats
- pennycress, field
- pigweed, redroot
- ryegrass, italian
- shepherd's-purse
- smartweed, annual
- speedwell, field
- speedwell
- sunflower, annual
- tansymustard, pinnate
- thistle, russian
- violet, field
- wallflower, bushy
- windgrass, common
Suppression
suppression2- quackgrass
- rescuegrass
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
OpenSky 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.
OpenSky FAQ
What weeds does OpenSky control?
The OpenSky label names 52 weeds, including foxtail barley, common barnyardgrass, catchweed bedstraw, blackgrass, bulbous bluegrass, and downy brome. Control varies by crop, rate, and timing.
What crops is OpenSky labeled for?
OpenSky is labeled for 4 crops and uses, including spring wheat, winter wheat, triticale, and durum wheat.
What is the active ingredient in OpenSky? Is it a generic?
OpenSky's active ingredient is fluroxypyr 1-methylheptyl ester and pyroxsulam (MOA Group 2 and 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 OpenSky?
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 OpenSky?
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 OpenSky 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.