Herbicide label
Shieldex 400SC Herbicide Label
Shieldex 400SC (EPA 71512-29-88783) is a Group 27 tolpyralate herbicide labeled for 8 crops. The label lists 22 controlled weeds, plus partial-control, suppression, and partner-control categories.
“Shieldex 400SC Herbicide is a Group 27 (WSSA) or Group F2 (HRAC) herbicide. Following the absorption of Shieldex 400SC Herbicide by actively growing plant tissue, inhibition of p-hydroxyphenyl pyruvate dioxygenase (HPPD) occurs in susceptible weeds and growth ceases.”
Shieldex 400SC label facts
- Product Shieldex 400SC
- EPA Reg. No. 71512-29-88783
- Distributor Summit Agro USA LLC
- Active ingredient tolpyralate
- MOA group 27
Crops on the Shieldex 400SC label
Shieldex 400SC is labeled for these 8 crops and uses, per the EPA label.
Weeds on the Shieldex 400SC label
The Shieldex 400SC label names 37 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 control22- velvetleaf
- pigweed, smooth
- amaranth, palmer
- amaranth, powell
- pigweed, redroot
- waterhemp, common
- ragweed, common
- ragweed, giant
- lambsquarters, common
- mustard, blue
- horseweed
- sunflower
- sunflower, annual
- henbit
- carpetweed
- nightshade, hairy
- buffalobur
- sowthistle, annual
- crabgrass, large
- foxtail, giant
- foxtail, yellow
- foxtail, green
Suppression
suppression15- kochia
- thistle, canada
- mallow, venice
- morningglory, ivyleaf
- morningglory, tall
- smartweed, pennsylvania
- nightshade, black
- nightshade, eastern black
- cocklebur, common
- barnyardgrass, common
- goosegrass
- panicum, fall
- millet, wild-proso
- grain sorghum
- signalgrass, broadleaf
Controls with a tank-mix partner
needs partner8- kochia
- nightshade, black
- cocklebur, common
- barnyardgrass, common
- goosegrass
- panicum, fall
- millet, wild-proso
- grain sorghum
Shieldex 400SC 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.
Shieldex 400SC FAQ
What weeds does Shieldex 400SC control?
The Shieldex 400SC label names 37 weeds, including velvetleaf, smooth pigweed, palmer amaranth, powell amaranth, redroot pigweed, and waterhemp. Control varies by crop, rate, and timing.
What crops is Shieldex 400SC labeled for?
Shieldex 400SC is labeled for 8 crops and uses, including field corn, wheat, barley, sweet corn, and popcorn.
What is the active ingredient in Shieldex 400SC? Is it a generic?
Shieldex 400SC's active ingredient is tolpyralate (MOA Group 27). 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.