Herbicide label
Shieldex 400SC
Shieldex 400SC (EPA 71512-29-88783) is a Group 27 tolpyralate herbicide labeled for 4 crops. The label lists 22 controlled weeds, plus partial-control, suppression, and partner-control categories.
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“Shieldex 400SC Herbicide is a Group 27 (WSSA) or Group F2 (HRAC) herbicide.”
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 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 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, volunteer
- 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
Want the control level for your crop, or to filter 1,700+ labels by any of these weeds? Use the free label filter.
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 cites the exact per-acre rate for your crop to 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 cites the exact plant-back for your rotational crop to 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 4 crops and uses, including field corn, sweet corn, popcorn, and fallow.
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.
What's the plant-back interval after Shieldex 400SC?
It depends on your rotational crop, application rate, and region, so the label gives a table, not one number. Build a program and FieldMarshal cites the exact interval for your rotation to the label line, so you can verify it.
Build a program →Can I tank-mix Shieldex 400SC?
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 cites the condition on each, so you can verify it.
Build a program →Plan in minutes, not evenings.
Start with Shieldex 400SC and let FieldMarshal build a defensible herbicide program for your field, every product, rate, and plant-back cross-referenced and cited.
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Sources
Last updated 2026-07-11.