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.
Crop × pest × application rate combinations from the official label. Rates converted to per-acre. PHI is the pre-harvest interval; REI is the restricted-entry interval. Always confirm against the official label PDF before applying.
| Crop | Target | Rate | PHI | REI |
|---|---|---|---|---|
| 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 | 12 d |
| Corn | Broadleaf weeds and grass weeds | 15 mL/acre | 45 d | 12 d |
| Corn | Broadleaf weeds and grass weeds | 15 mL/acre | 45 d | 12 d |
| Corn | Broadleaf weeds and grass weeds | 15 mL/acre | 45 d | 12 d |
| Corn | Broadleaf weeds and grass weeds | 15 mL/acre | 45 d | 12 d |
| Corn | Broadleaf weeds and grass weeds | 15 mL/acre | 45 d | 12 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 | 12 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 |
| 12 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 | 12 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 | 12 d |
Adjuvant requirements, compatibility notes, and mixing restrictions from the official label. Always confirm against the official label PDF before mixing.
| Guidance | Adjuvant | Rate |
|---|---|---|
| Required | ASSIST MSO™ Concentrate with Leci-Tech, Destination™ MSO, Merge® adjuvant, Hasten® NT spray adjuvant, Assist® oil concentrate or XA™ oil concentrate plus liquid fertilizer (UAN 28%) must be added to all applications of IMPACT Herbicide as directed in specific tank mixes. | 1.25% v/v, i.e. 12.5 litres per 1000 L spray solution |
| Required | Hasten NT Ultra Spray Adjuvant MSO™ Concentrate with Leci-Tech, Destination™ MSO, Merge® adjuvant, Hasten® NT spray adjuvant, Assist® oil concentrate or XA™ oil concentrate plus liquid fertilizer (UAN 28%) must be added to all applications of IMPACT Herbicide as directed in specific tank mixes. | 0.5% v/v, i.e. 5 litres per 1000 L spray solution (IMPACT + atrazine mixes); 0.25% v/v, i.e. 2.5 litres per 1000 L spray solution (IMPACT + atrazine + Frontier Max mix) |
| Required | MERGE® ADJUVANT MSO™ Concentrate with Leci-Tech, Destination™ MSO, Merge® adjuvant, Hasten® NT spray adjuvant, Assist® oil concentrate or XA™ oil concentrate plus liquid fertilizer (UAN 28%) must be added to all applications of IMPACT Herbicide as directed in specific tank mixes. | 0.5% v/v, i.e. 5 litres per 1000 L spray solution |
| Required | XA Oil Concentrate Tank Mix 5: XA Oil Concentrate (1% v/v) | 1% v/v |
| Required | XA Oil Concentrate MSO™ Concentrate with Leci-Tech, Destination™ MSO, Merge® adjuvant, Hasten® NT spray adjuvant, Assist® oil concentrate or XA™ oil concentrate plus liquid fertilizer (UAN 28%) must be added to all applications of IMPACT Herbicide as directed in specific tank mixes. | 1% v/v, i.e. 10 litres per 1000 L spray solution |
| Required | Hasten NT Spray Adjuvant Tank Mix 2: Spray adjuvants required: Hasten NT Spray Adjuvant (0.25% v/v) | 0.25% v/v |
| Required | Merge Adjuvant Tank Mix 5: Merge Adjuvant (0.5% v/v) | 0.5% v/v |
| Required | Hasten NT Spray Adjuvant Tank Mix 5: Hasten NT Spray Adjuvant (0.5% v/v) | 0.5% v/v |
| Required | Assist Oil Concentrate Tank Mix 5: Assist Oil Concentrate (1.25% v/v) | 1.25% v/v |
| Required | MSO Concentrate with Leci-Tech Tank Mix 5: MSO Concentrate with Leci-Tech (1% v/v) | 1% v/v |
| Required | Destination MSO Tank Mix 5: Destination MSO (0.25% v/v) plus UAN 28% (1.25% v/v) | 0.25% v/v plus UAN 28% (1.25% v/v) |
| Required | UAN 28% spray adjuvant... plus liquid fertilizer (UAN 28%) must be added to all applications as directed in specific tank mixes | 1.25% v/v |
| Required | MSO MSO™ Concentrate with Leci-Tech, Destination™ MSO, Merge® adjuvant, Hasten® NT spray adjuvant, Assist® oil concentrate or XA™ oil concentrate plus liquid fertilizer (UAN 28%) must be added to all applications of IMPACT Herbicide as directed in specific tank mixes. | 1% v/v, i.e. 10 litres per 1000 L spray solution |
| Required | MSO MSO™ Concentrate with Leci-Tech, Destination™ MSO, Merge® adjuvant, Hasten® NT spray adjuvant, Assist® oil concentrate or XA™ oil concentrate plus liquid fertilizer (UAN 28%) must be added to all applications of IMPACT Herbicide as directed in specific tank mixes. | 0.25% v/v, i.e. 2.5 litres per 1000 L spray solution |
| Required | liquid fertilizer (UAN 28%) MSO™ Concentrate with Leci-Tech, Destination™ MSO, Merge® adjuvant, Hasten® NT spray adjuvant, Assist® oil concentrate or XA™ oil concentrate plus liquid fertilizer (UAN 28%) must be added to all applications of IMPACT Herbicide as directed in specific tank mixes. | 1.25% v/v, i.e. 12.5 litres per 1000 L spray solution |
About this content. This page presents the official PRD label as published by Health Canada's Pesticides Regulatory Directorate (formerly the 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.
