Herbicide label

Valkos SC Herbicide Label

Valkos SC (EPA 34704-1183) is a Group 14 flumioxazin herbicide labeled for 25 crops. The label lists 102 controlled weeds, plus partial-control, suppression, and partner-control categories.

Valkos SC label facts

Crops on the Valkos SC label

Valkos SC is labeled for these 25 crops and uses, per the EPA label.

Weeds on the Valkos SC label

The Valkos SC label names 106 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 control102
  • amaranth, palmer
  • amaranth, spiny
  • lambsquarters, common
  • prickly lettuce
  • mustard, wild
  • nightshade, black
  • nightshade, eastern black
  • nightshade, hairy
  • pigweed, redroot
  • pigweed, smooth
  • pigweed, tumble
  • radish, wild
  • anoda, spurred
  • barnyardgrass, common
  • beggarweed, florida
  • bindweed, field
  • bluegrass, annual
  • brome, downy
  • volunteer canola
  • carpetweed
  • chamomile, false
  • chickweed, common
  • chickweed, mouseear
  • cockle, white
  • cocklebur, common
  • copperleaf, hophornbeam
  • crabgrass, large
  • crabgrass, smooth
  • crownbeard, golden
  • dandelion
  • deadnettle, purple
  • eclipta
  • eveningprimrose, cutleaf
  • fiddleneck
  • filaree, redstem
  • filaree, whitestem
  • flatsedge, rice
  • fleabane, hairy
  • flixweed
  • foxtail, bristly
  • foxtail, giant
  • foxtail, green
  • foxtail, yellow
  • goosegrass
  • groundsel, common
  • groundsel, cressleaf
  • guineagrass
  • henbit
  • horseweed
  • indigo, hairy
  • jimsonweed
  • johnsongrass, seedling
  • kochia
  • lovegrass, california
  • mallow, common
  • mallow, little
  • mallow, venice
  • mayweed
  • morningglory, entireleaf
  • morningglory, ivyleaf
  • morningglory, pitted
  • morningglory, scarlet
  • morningglory, smallflower
  • morningglory, tall
  • mustard, tansy
  • mustard, tumble
  • nettle, burning
  • panicum, fall
  • panicum, texas
  • pennycress, field
  • plantain, broadleaf
  • poinsettia, wild
  • puncturevine
  • purslane, common
  • purslane, horse
  • purslane, rock
  • pusley, florida
  • ragweed, common
  • ragweed, giant
  • redmaids
  • redweed
  • rocket, london
  • rocket, yellow
  • ryegrass, italian
  • senna, coffee
  • sesbania, hemp
  • shepherd's-purse
  • sicklepod
  • sida, prickly
  • signalgrass, broadleaf
  • smartweed, ladysthumb
  • smartweed, pale
  • smartweed, pennsylvania
  • smellmelon
  • sowthistle, annual
  • sowthistle, prickly
  • spurge, spotted
  • starbur, bristly
  • thistle, russian
  • velvetleaf
  • waterhemp, common
  • wormwood, biennial

Suppression

suppression3
  • buckwheat, wild
  • cheat
  • dodder

Controls with a tank-mix partner

needs partner1
  • carolina geranium

Valkos SC 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.

Valkos SC FAQ

What weeds does Valkos SC control?

The Valkos SC label names 106 weeds, including palmer amaranth, spiny amaranth, common lambsquarters, prickly lettuce, wild mustard, and black nightshade. Control varies by crop, rate, and timing.

What crops is Valkos SC labeled for?

Valkos SC is labeled for 25 crops and uses, including field corn, soybeans, wheat, cotton, and sunflower.

What is the active ingredient in Valkos SC? Is it a generic?

Valkos SC's active ingredient is flumioxazin (MOA Group 14). 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.