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Registered Crop Input Products / Fierce Master Herbicide

Fierce Master Herbicide

PCP #33116 · Valent Canada Inc. · Herbicide

Group 14 and Group 15

Group 14 and Group 15 dual-action herbicide containing flumioxazin and pyroxasulfone for preemergence and burndown control of annual broadleaf and grass weeds in soybeans, field corn, spring wheat, fallow land, and non-crop bare ground areas. Provides residual weed control including resistant kochia biotypes.

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Registered uses (6)

Crop × pest × application rate combinations from the official label. Rates converted to per-acre. Always confirm against the official label PDF before applying.

CropTargetRatePHI
CornCommon lamb's-quarters, Common ragweed, Common Waterhemp, Dandelion, Eastern black nightshade, Green foxtail, Green pigweed, Hairy nightshade, Large crabgrass, Palmer amaranth, Pennsylvania smartweed, Redroot pigweed, Velvetleaf, Wild buckwheat, Wild mustard, Kochia (including Group 2, 4, and 9 resistant), Canada fleabane, Common chickweed; Suppression: Volunteer canola85 g/acre–
Fallow LandCommon lamb's-quarters, Common ragweed, Common Waterhemp, Dandelion, Eastern black nightshade, Green foxtail, Green pigweed, Hairy nightshade, Large crabgrass, Palmer amaranth, Pennsylvania smartweed, Redroot pigweed, Velvetleaf, Wild buckwheat, Wild mustard, Kochia (including Group 2, 4, and 9 resistant), Canada fleabane, Common chickweed; Suppression: Volunteer canola85–127 g/acre–
Non-Crop AreasCommon lamb's-quarters, Common ragweed, Common Waterhemp, Dandelion, Eastern black nightshade, Green pigweed, Hairy nightshade, Palmer amaranth, Pennsylvania smartweed, Redroot pigweed, Velvetleaf, Wild buckwheat, Wild mustard, Witchgrass, Green foxtail, Large crabgrass, Kochia (including Group 2, 4, and 9 resistant), Canada fleabane170–235 g/acre–
SoybeanCommon lamb's-quarters, Common ragweed, Common Waterhemp, Dandelion, Eastern black nightshade, Green foxtail, Green pigweed, Hairy nightshade, Large crabgrass, Palmer amaranth, Pennsylvania smartweed, Redroot pigweed, Velvetleaf, Wild buckwheat, Wild mustard, Kochia (including Group 2, 4, and 9 resistant), Canada fleabane, Common chickweed; Suppression: Volunteer canola85 g/acre–
SoybeanCommon lamb's-quarters, Common ragweed, Common Waterhemp, Dandelion, Eastern black nightshade, Green foxtail, Green pigweed, Hairy nightshade, Large crabgrass, Palmer amaranth, Pennsylvania smartweed, Redroot pigweed, Velvetleaf, Wild buckwheat, Wild mustard, Kochia (including Group 2, 4, and 9 resistant), Canada fleabane, Common chickweed; Suppression: Volunteer canola127 g/acre–
WheatCommon lamb's-quarters, Common ragweed, Common Waterhemp, Dandelion, Eastern black nightshade, Green foxtail, Green pigweed, Hairy nightshade, Large crabgrass, Palmer amaranth, Pennsylvania smartweed, Redroot pigweed, Velvetleaf, Wild buckwheat, Wild mustard, Kochia (including Group 2, 4, and 9 resistant), Canada fleabane, Common chickweed; Suppression: Volunteer canola85 g/acre–

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.

Quick facts

Active ingredients
pyroxasulfone 42.5 %
Group 15
CAS 447399-55-5
flumioxazin 33.5 %
N-phenylphthalimide herbicide
Mode of action: PPO inhibitor (HRAC 14, N-phenylphthalimide)
CAS 103361-09-7
Formulation
granular
Resistance group
Group 14 and Group 15
First registered
2018-06-06
Registration expiry
2029-12-31