IMPACT® Herbicide
PCP #28141 · Amvac Chemical Corporation · Herbicide
Group 27 systemic post-emergence herbicide for selective control of grasses and broadleaf weeds in field corn, sweet corn, and seed corn. Controls weeds by inhibiting carotenoid biosynthesis. Must be tank mixed with approved partners. Contains topramezone at 336 g/L as suspension formulation. Compatible with herbicide tolerant corn varieties including Clearfield, Roundup Ready, and LibertyLink hybrids.
Registered uses (10)
Crop × pest × application rate combinations from the official label. Rates converted to per-acre. Always confirm against the official label PDF before applying.
| Crop | Target | Rate | PHI |
|---|---|---|---|
| Corn | Barnyard grass, Common crabgrass (large and smooth), Green foxtail, Yellow foxtail, Common chickweed, Lamb's quarters, Green pigweed, Redroot pigweed, Green smartweed, Common ragweed, Wild buckwheat, Velvetleaf, Pennycress, Wild mustard, Lady's thumb | 15 mL/acre | 45 d |
| Corn | Broadleaf weeds and grass weeds | 15 mL/acre | 45 d |
| Corn | Broadleaf weeds and grass weeds | 15 mL/acre | 45 d |
| Corn | Broadleaf weeds and grass weeds | 15 mL/acre | 45 d |
| Corn | Broadleaf weeds and grass weeds | 15 mL/acre | 45 d |
| Corn | Broadleaf weeds and grass weeds | 15 mL/acre | 45 d |
| Corn | Common lamb's quarters, Lady's thumb, Common ragweed, Eastern black nightshade, Wild mustard, Redroot pigweed, Green pigweed, Canola volunteer (including glyphosate tolerant biotypes), Velvetleaf (suppressed), Common chickweed (suppressed), Green foxtail (suppressed), Yellow foxtail (suppressed), Large crabgrass (suppressed), Barnyard grass (suppressed), Giant ragweed (suppressed) | 15 mL/acre | 45 d |
| Corn | Common lamb's quarters, Lady's thumb, Common ragweed, Eastern black nightshade, Wild mustard, Redroot pigweed, Green pigweed, Canola volunteer (including glyphosate tolerant biotypes), Velvetleaf (suppressed), Common chickweed (suppressed), Green foxtail (suppressed), Yellow foxtail (suppressed), Large crabgrass (suppressed), Barnyard grass (suppressed), Giant ragweed (suppressed) | 15 mL/acre | 45 d |
| Corn | Common lamb's-quarters, Lady's thumb, Common ragweed, Eastern black nightshade, Wild mustard, Redroot pigweed, Green pigweed, Green foxtail, Yellow foxtail, Large crabgrass, Barnyard grass, Fall panicum, Old witchgrass, Canola volunteer (including glyphosate tolerant biotypes), Velvetleaf (suppressed), Common chickweed (suppressed), Giant ragweed (suppressed) | 15 mL/acre | 45 d |
| Corn | Common ragweed, Eastern black nightshade, Wild mustard, Common lamb's quarters (suppressed), Velvetleaf (suppressed), Common chickweed (suppressed), Lady's thumb (suppressed), Green foxtail (suppressed), Yellow foxtail (suppressed), Large crabgrass (suppressed), Barnyard grass (suppressed), Canola volunteer (suppressed), Giant ragweed (suppressed) | 15 mL/acre | 45 d |
About this content. This page presents the official PMRA label as published by Health Canada's Pest Management Regulatory Agency, the source of record. Always read the official label and consult your provincial pesticide- application authority before use. Report an error.