PCP #34792 · Viking Crop Production Partners Inc. · Herbicide
Group 2 soluble granule herbicide containing thifensulfuron-methyl and tribenuron-methyl for post-emergent control of annual broadleaf weeds and suppression of Canada thistle in wheat (spring, winter and durum) and spring barley. Multiple tank mix options available for expanded weed spectrum including Group 2 resistant kochia and annual grasses.
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 by VIKING Risor and weeds controlled by 2,4-D Ester | 12.1 g/acre | – | 12 d |
| Barley | Broadleaf weeds controlled by VIKING Risor plus 2,4-D Ester, plus Group 2 resistant KOCHIA | 12.1 g/acre | – | 12 d |
| Barley | Broadleaf weeds controlled by VIKING Risor plus Group 2 resistant KOCHIA | 12.1 g/acre | – | 12 d |
| Barley |
| Broadleaf weeds controlled by VIKING Risor, Dandelion, Cleavers (1-6 whorl), Kochia including Group 2 resistant biotypes, Volunteer group 2 tolerant canola varieties |
| 12.1 g/acre |
| – |
| 12 d |
| Barley | Broadleaf weeds controlled by VIKING Risor, cleavers (1-6 whorl), kochia including Group 2 resistant biotypes | 12.1 g/acre | – | 12 d |
| Barley | Broadleaf weeds controlled by VIKING Risor, kochia including Group 2 resistant biotypes, cleavers (1-4 whorl) | 12.1 g/acre | – | 12 d |
| Barley | Broadleaf weeds controlled by VIKING Risor, plus wild oats, volunteer oats, green foxtail, yellow foxtail, volunteer canary seed and proso millet | 12.1 g/acre | 60 d | 12 d |
| Barley | Broadleaf weeds controlled by VIKING Risor, white cockle, dandelion, volunteer group 2 tolerant canola varieties | 12.1 g/acre | – | 12 d |
| Cereals | Annual smartweed, Cow cockle, Hemp-nettle, Kochia, Lamb's-quarters, Redroot Pigweed, Stinkweed, Volunteer Rapeseed, Wild Buckwheat, Wild mustard; Suppressed: Canada thistle | 12.1 g/acre | – | 12 d |
| Wheat | Annual smartweed, Cow cockle, Hemp-nettle, Kochia, Lamb's-quarters, Redroot Pigweed, Stinkweed, Volunteer Rapeseed, Wild Buckwheat, Wild mustard; Suppressed: Canada thistle | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled by VIKING Risor + 2,4-D, plus wild oats and green foxtail | 12.1 g/acre | 80 d | 12 d |
| Wheat | Broadleaf weeds controlled by VIKING Risor and weeds controlled by 2,4-D Ester | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled by VIKING Risor plus 2,4-D Ester, plus Group 2 resistant KOCHIA | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled by VIKING Risor plus Group 2 resistant KOCHIA | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled by VIKING Risor, Dandelion, Cleavers (1-6 whorl), Kochia including Group 2 resistant biotypes, Volunteer group 2 tolerant canola varieties | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled by VIKING Risor, cleavers (1-6 whorl), kochia including Group 2 resistant biotypes | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled by VIKING Risor, cleavers (1-6 whorl), kochia including Group 2 resistant biotypes | 12.1 g/acre | – | 12 d |
| Wheat | Broadleaf weeds controlled by VIKING Risor, 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 by VIKING Risor, white cockle, dandelion, volunteer group 2 tolerant canola varieties | 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. Rate: 700 mL/hectare. | 700 mL/hectare |
| Required | adjuvant Apply with an adjuvant registered for use with VIKING Risor Herbicide. | – |
| Required | NIS Tank Mixture: VIKING Risor Herbicide + EVEREST® 70 DF or EVEREST SOLUPAK 70 + 2,4-D Ester LV700 + Non-Ionic Surfactant. Rate: 2.5 L/1000 L (0.25 % v/v) | 2.5 L/1000 L (0.25 % v/v) |
| Recommended | AGRAL 90 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 |
| Recommended | CITOWETT PLUS 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 |
| Recommended | HiActivate NON-IONIC LIQUID SPREADER/ACTIVATOR 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 |
| Recommended | NUFARM ENHANCE™ 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 |
| Recommended | SUPER SPREADER ADJUVANT 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 |
| Recommended | WEEDAWAY AG-SURF II 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 |
| Recommended | WeedAway® Ag-Surf 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 |
| Recommended | surfactant 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 |
| 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. | – |
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.
