Herbicide label
Keystone LA NXT Herbicide Label
Keystone LA NXT (EPA 62719-670) is a Group 5 and 15 acetochlor and atrazine herbicide labeled for 5 crops. The label lists 43 controlled weeds, plus partial-control, suppression, and partner-control categories.
“Keystone LA NXT is a preemergence herbicide for which spray adjuvants have little or no effect on performance.”
Keystone LA NXT label facts
- Product Keystone LA NXT
- EPA Reg. No. 62719-670
- Registrant Corteva Agriscience
- Active ingredient acetochlor and atrazine
- MOA group 5 and 15
Crops on the Keystone LA NXT label
Keystone LA NXT is labeled for these 5 crops and uses, per the EPA label.
Weeds on the Keystone LA NXT label
The Keystone LA NXT label names 49 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 control43- barnyardgrass, common
- beggarweed, florida
- carpetweed
- cocklebur, common
- crabgrass spp.
- crowfootgrass
- cupgrass, southwestern
- cupgrass, woolly
- foxtail, giant
- foxtail, green
- foxtail, robust (purple, white)
- foxtail, yellow
- galinsoga
- goosegrass
- groundcherry, annual
- groundcherry, cutleaf
- henbit
- jimsonweed
- kochia
- lambsquarters, common
- foxtail, millet
- mustard spp.
- nightshade, black
- nightshade, hairy
- nutsedge, yellow
- wild oats
- panicum, browntop
- panicum, fall
- panicum, texas
- pigweed spp.
- purslane, common
- pusley, florida
- ragweed, common
- red rice
- sicklepod
- sida, prickly
- signalgrass, broadleaf
- smartweed
- sprangletop, red
- velvetleaf
- waterhemp, common
- volunteer wheat
- witchgrass
Partial control
partial6- johnsongrass, seedling
- millet, wild-proso
- ragweed, giant
- sandbur, field
- shattercane
- sunflower, annual
Keystone LA NXT 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.
Keystone LA NXT FAQ
What weeds does Keystone LA NXT control?
The Keystone LA NXT label names 49 weeds, including common barnyardgrass, florida beggarweed, carpetweed, common cocklebur, crabgrass spp., and crowfootgrass. Control varies by crop, rate, and timing.
What crops is Keystone LA NXT labeled for?
Keystone LA NXT is labeled for 5 crops and uses, including field corn, seed corn, corn silage, sweet corn, and popcorn.
What is the active ingredient in Keystone LA NXT? Is it a generic?
Keystone LA NXT's active ingredient is acetochlor and atrazine (MOA Group 5 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.