Herbicide label
Kyber
Kyber (EPA 59639-236) is a Group 5, 14, and 15 flumioxazin, metribuzin, and pyroxasulfone herbicide labeled for 4 crops. The label lists 63 controlled weeds, plus partial-control, suppression, and partner-control categories.
Build the herbicide program for your field
Tell FieldMarshal your crop, weeds, and rotation. Get back a complete program, products, rates, plant-back, and tank-mix, with every line checked against the label so you can verify it yourself.
Built from 1,700+ EPA herbicide labels and 49 state weed-control guides. Made for crop advisors and growers.
Free to create your account. Every line references the label, so you can check it against the source.
Kyber label facts
- Product Kyber
- EPA Reg. No. 59639-236
- Registrant Valent U. S. A. LLC
- Active ingredient flumioxazin, metribuzin, and pyroxasulfone
- MOA group 5, 14, and 15
Crops on the Kyber label
Kyber 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 Kyber label
The Kyber label names 70 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 control63- beggarweed, florida
- barnyardgrass, common
- bluegrass, annual
- brome, downy
- carpetweed
- cheat
- chickweed, common
- chickweed, mouseear
- senna, coffee
- crabgrass, large
- crabgrass, smooth
- croton, tropic
- crownbeard, golden
- dandelion
- eclipta
- evening-primrose, cutleaf
- foxtail, giant
- foxtail, green
- foxtail, yellow
- goosegrass
- henbit
- indigo, hairy
- jimsonweed
- johnsongrass, seedling
- kochia
- lambsquarters, common
- lovegrass, california
- mallow, little
- mallow, venice
- morningglory, entireleaf
- morningglory, ivyleaf
- morningglory, red
- morningglory, smallflower
- morningglory, tall
- mustard, wild
- nightshade, black
- nightshade, eastern black
- nightshade, hairy
- panicum, fall
- panicum, texas
- pigweed, palmer amaranth
- pigweed, redroot
- pigweed, smooth
- pigweed, spiny amaranth
- pigweed, tumble
- puncturevine
- purslane, common
- pusley, florida
- ragweed, common
- red rice
- redmaids
- ryegrass, italian
- ryegrass, rigid
- sesbania, hemp
- shepherd's-purse
- sida, prickly
- signalgrass, broadleaf
- spurge, spotted
- anoda, spurred
- thistle, russian
- velvetleaf
- waterhemp, common
- poinsettia, wild
Suppression
suppression7- starbur, bristly
- buckwheat, wild
- copperleaf, hophornbeam
- ladysthumb
- ragweed, giant
- smartweed, pennsylvania
- wormwood, biennial
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
Kyber 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 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.
Kyber FAQ
What weeds does Kyber control?
The Kyber label names 70 weeds, including florida beggarweed, common barnyardgrass, annual bluegrass, downy brome, carpetweed, and cheat. Control varies by crop, rate, and timing.
What crops is Kyber labeled for?
Kyber is labeled for 4 crops and uses, including field corn, soybeans, corn silage, and fallow.
What is the active ingredient in Kyber? Is it a generic?
Kyber's active ingredient is flumioxazin, metribuzin, and pyroxasulfone (MOA Group 5, 14, and 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 Kyber?
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 Kyber?
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 Kyber 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.