Herbicide label
Kyber Herbicide Label
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.
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.
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
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.
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.
Sources
Last updated 2026-09-30.