PCP #34792 · Viking Crop Production Partners Inc. · Herbicide
Group 2 sulfonylurea herbicide containing thifensulfuron-methyl and tribenuron-methyl (25% + 25%) as a water soluble granule for post-emergent broadleaf weed control in wheat (spring, winter and durum) and spring barley.
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 |
|---|---|---|---|---|
| Barley | Broadleaf weeds controlled or suppressed by VIKING Risor Herbicide alone, plus dandelion (spring and fall rosettes, up to 15 cm in diameter), cleavers (1-6 whorl), kochia including Group 2 resistant biotypes (seedling to 8-leaf stage), and volunteer Group 2 tolerant canola varieties (e.g. Clearfield canola) at the 2-4 leaf stage | 12.1 g/acre | – | 12 d |
| Barley | Broadleaf weeds controlled or suppressed by VIKING Risor Herbicide alone, plus kochia including Group 2 resistant biotypes (seedling to 8-leaf stage) and cleavers (1-4 whorl) | 12.1 g/acre | – | 12 d |
| Wheat | Annual smartweed (green smartweed, lady's thumb), cow cockle, hemp-nettle, kochia, lamb's-quarters, redroot pigweed, stinkweed, volunteer rapeseed, wild buckwheat, wild mustard; Canada thistle (suppressed) | 12.1 g/acre | – | 12 d |
| Wheat | Annual smartweed (green smartweed, lady's thumb), cow cockle, hemp-nettle, kochia, lamb's-quarters, redroot pigweed, stinkweed, volunteer rapeseed, wild buckwheat, wild mustard; Canada thistle (suppressed) | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled or suppressed by VIKING Risor Herbicide + 2,4-D, plus wild oats and green foxtail | 12.1 g/acre | 80 d | 12 d |
| Wheat | Broadleaf weeds controlled or suppressed by VIKING Risor Herbicide alone, as well as weeds controlled by 2,4-D Ester | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled or suppressed by VIKING Risor Herbicide alone, plus cleavers (1-6 whorl) and kochia including Group 2 resistant biotypes (seedling to 8-leaf stage) | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled or suppressed by VIKING Risor Herbicide alone, plus cleavers (1-6 whorl) and kochia including Group 2 resistant biotypes (seedling to 8-leaf stage) | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled or suppressed by VIKING Risor Herbicide alone, plus cleavers (1-6 whorl) and kochia including Group 2 resistant biotypes (seedling to 8-leaf stage) | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled or suppressed by VIKING Risor Herbicide alone, plus dandelion (spring and fall rosettes, up to 15 cm in diameter), cleavers (1-6 whorl), kochia including Group 2 resistant biotypes (seedling to 8-leaf stage), and volunteer Group 2 tolerant canola varieties (e.g. Clearfield canola) at the 2-4 leaf stage | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled or suppressed by VIKING Risor Herbicide alone, plus white cockle, dandelion (spring and fall rosettes, up to 15 cm in diameter), and volunteer Group 2 tolerant canola varieties (e.g. Clearfield canola) at the 2-4 leaf stage | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled or suppressed by VIKING Risor Herbicide alone, plus wild oats, volunteer oats, green foxtail, yellow foxtail, volunteer canary seed and proso millet | 12.1 g/acre | 60 d | 12 d |
| Wheat | Broadleaf weeds controlled or suppressed by VIKING Risor Herbicide plus 2,4-D Ester, plus Group 2 resistant kochia | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled or suppressed by VIKING Risor Herbicide plus 2,4-D Ester, plus Group 2 resistant kochia | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled or suppressed by VIKING Risor Herbicide plus Group 2 resistant kochia | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled or suppressed by VIKING Risor Herbicide plus Group 2 resistant kochia | 12.1 g/acre | – | 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 | ADIGOR Adjuvant Tank Mixture: VIKING Risor Herbicide + AXIAL 100 EC Herbicide + ADIGOR Adjuvant at 700 mL/hectare. MIXING: ...finally either Adigor adjuvant. DO NOT USE ADDITIONAL NON-IONIC SURFACTANT. | 700 mL/hectare |
| Required | CITOWETT PLUS Apply with an adjuvant registered for use with VIKING Risor Herbicide. | 2 litres/1000 litres spray solution |
| Required | HiActivate NON-IONIC LIQUID SPREADER/ACTIVATOR Apply with an adjuvant registered for use with VIKING Risor Herbicide. | 2 litres/1000 litres spray solution |
| Required | NUFARM ENHANCE™ Apply with an adjuvant registered for use with VIKING Risor Herbicide. | 2 litres/1000 litres spray solution |
| Required | SUPER SPREADER ADJUVANT Apply with an adjuvant registered for use with VIKING Risor Herbicide. | 2 litres/1000 litres spray solution |
| Required | WEEDAWAY AG-SURF II Apply with an adjuvant registered for use with VIKING Risor Herbicide. | 2 litres/1000 litres spray solution |
| Required | AGRAL 90 Apply with an adjuvant registered for use with VIKING Risor Herbicide. Recommended adjuvants are: AGRAL 90, AG-SURF, CITOWETT PLUS, LIBERATE ADJUVANT, AG-SURF II, HIACTIVATE NON-IONIC LIQUID SPREADER/ACTIVATOR, SUPER SPREADER ADJUVANT AND ENHANCE | 2 litres/1000 litres spray solution |
| Required | LIBERATE ADJUVANT Apply with an adjuvant registered for use with VIKING Risor Herbicide. | 2 litres/1000 litres spray solution |
| Required | Agral 90, Ag-Surf, CITOWETT PLUS, Liberate Adjuvant, Ag-Surf II, HiActivate Non-ionic Liquid Spreader/Activator, Super Spreader Adjuvant or Enhance Tank Mixture: VIKING Risor Herbicide + Banvel II or Banvel Dry EG + 2,4-D Ester LV700; Adjuvants: Agral 90, Ag-Surf, CITOWETT PLUS, Liberate Adjuvant, Ag-Surf II, HiActivate, Super Spreader Adjuvant or Enhance at 2 litres/1000 litres spray solution | 2 litres/1000 litres spray solution |
| Required | NIS (non-ionic surfactant) Tank Mixture: VIKING Risor Herbicide + EVEREST 70 DF or EVEREST SOLUPAK 70 + 2,4-D Ester LV700 + Non-Ionic Surfactant at 2.5 L/1000 L (0.25 % v/v) | 2.5 L/1000 L (0.25 % v/v) |
| Do not mix | Carriers other than water Use only water as a carrier. Other carriers may accelerate breakdown of VIKING Risor Herbicide and reduce its effectiveness. | – |
| Do not mix | Additional non-ionic surfactant (in the VIKING Risor + AXIAL 100 EC + ADIGOR tank mix) DO NOT USE ADDITIONAL NON-IONIC SURFACTANT (as stated in the mixing instructions for the Axial/Adigor tank mixture) | – |
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.
