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Registered Crop Input Products / Fierce® EZ Master Herbicide

Fierce® EZ Master Herbicide

PCP #33870 · Valent Canada Inc. · Herbicide

Group 14 and Group 15

Group 14 and Group 15 suspension herbicide containing flumioxazin and pyroxasulfone for preemergence and burndown control of annual broadleaf and grass weeds in soybeans, chickpeas, field peas, lentils, field corn, wheat, fallow land, and non-crop bare ground areas. Controls resistant biotypes of common waterhemp, kochia, green foxtail, and wild mustard.

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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.

CropTargetRatePHI
ChickpeaAnnual sowthistle, Canada fleabane, Cleavers, Common Barnyard grass, Common chickweed, Common lamb's-quarters, Common ragweed, Common Waterhemp including Group 2, 5, 9 resistant biotypes, Dandelion, Eastern black nightshade, Green foxtail including Group 1 and 2 resistant, Green pigweed, Hairy nightshade, Kochia including Group 2, 4, 9 resistant, Large crabgrass, Palmer amaranth, Pennsylvania smartweed, Redroot pigweed, Velvetleaf, Wild buckwheat, Wild mustard including Group 2 resistant; Suppression: Downy brome, Foxtail barley, Japanese brome, Russian thistle, Volunteer canola, Wild oats178–267 mL/acre–
CornAnnual sowthistle, Canada fleabane, Cleavers, Common Barnyard grass, Common chickweed, Common lamb's-quarters, Common ragweed, Common Waterhemp including Group 2, 5, 9 resistant biotypes, Dandelion, Eastern black nightshade, Green foxtail including Group 1 and 2 resistant, Green pigweed, Hairy nightshade, Kochia including Group 2, 4, 9 resistant, Large crabgrass, Palmer amaranth, Pennsylvania smartweed, Redroot pigweed, Velvetleaf, Wild buckwheat, Wild mustard including Group 2 resistant; Suppression: Downy brome, Foxtail barley, Japanese brome, Russian thistle, Volunteer canola, Wild oats178 mL/acre–
Fallow LandAnnual sowthistle, Canada fleabane, Cleavers, Common Barnyard grass, Common chickweed, Common lamb's-quarters, Common ragweed, Common Waterhemp including Group 2, 5, 9 resistant biotypes, Dandelion, Eastern black nightshade, Green foxtail including Group 1 and 2 resistant, Green pigweed, Hairy nightshade, Kochia including Group 2, 4, 9 resistant, Large crabgrass, Palmer amaranth, Pennsylvania smartweed, Redroot pigweed, Velvetleaf, Wild buckwheat, Wild mustard including Group 2 resistant; Suppression: Downy brome, Foxtail barley, Japanese brome, Russian thistle, Volunteer canola, Wild oats178–267 mL/acre–
LentilAnnual sowthistle, Canada fleabane, Cleavers, Common Barnyard grass, Common chickweed, Common lamb's-quarters, Common ragweed, Common Waterhemp including Group 2, 5, 9 resistant biotypes, Dandelion, Eastern black nightshade, Green foxtail including Group 1 and 2 resistant, Green pigweed, Hairy nightshade, Kochia including Group 2, 4, 9 resistant, Large crabgrass, Palmer amaranth, Pennsylvania smartweed, Redroot pigweed, Velvetleaf, Wild buckwheat, Wild mustard including Group 2 resistant; Suppression: Downy brome, Foxtail barley, Japanese brome, Russian thistle, Volunteer canola, Wild oats178–267 mL/acre–
Non-CropAnnual sowthistle, Canada fleabane, Cleavers, Common Barnyard grass, Common chickweed, Common lamb's-quarters, Common ragweed, Common Waterhemp including Group 2, 5, 9 resistant biotypes, Dandelion, Eastern black nightshade, Green foxtail including Group 1 and 2 resistant, Green pigweed, Hairy nightshade, Kochia including Group 2, 4, 9 resistant, Large crabgrass, Palmer amaranth, Pennsylvania smartweed, Redroot pigweed, Velvetleaf, Wild buckwheat, Wild mustard including Group 2 resistant, Witchgrass; Suppression: Downy brome, Foxtail barley, Japanese brome, Russian thistle, Volunteer canola, Wild oats356–492 mL/acre–
Non-CropAnnual sowthistle, Canada fleabane, Cleavers, Common Barnyard grass, Common chickweed, Common lamb's-quarters, Common ragweed, Common Waterhemp including Group 2, 5, 9 resistant biotypes, Dandelion, Eastern black nightshade, Green foxtail including Group 1 and 2 resistant, Green pigweed, Hairy nightshade, Kochia including Group 2, 4, 9 resistant, Large crabgrass, Palmer amaranth, Pennsylvania smartweed, Redroot pigweed, Velvetleaf, Wild buckwheat, Wild mustard including Group 2 resistant, Witchgrass; Suppression: Downy brome, Foxtail barley, Japanese brome, Russian thistle, Volunteer canola, Wild oats356–492 mL/acre–
PeaAnnual sowthistle, Canada fleabane, Cleavers, Common Barnyard grass, Common chickweed, Common lamb's-quarters, Common ragweed, Common Waterhemp including Group 2, 5, 9 resistant biotypes, Dandelion, Eastern black nightshade, Green foxtail including Group 1 and 2 resistant, Green pigweed, Hairy nightshade, Kochia including Group 2, 4, 9 resistant, Large crabgrass, Palmer amaranth, Pennsylvania smartweed, Redroot pigweed, Velvetleaf, Wild buckwheat, Wild mustard including Group 2 resistant; Suppression: Downy brome, Foxtail barley, Japanese brome, Russian thistle, Volunteer canola, Wild oats178–267 mL/acre–
SoybeanAnnual sowthistle, Canada fleabane, Cleavers, Common Barnyard grass, Common chickweed, Common lamb's-quarters, Common ragweed, Common Waterhemp including Group 2, 5, 9 resistant biotypes, Dandelion, Eastern black nightshade, Green foxtail including Group 1 and 2 resistant, Green pigweed, Hairy nightshade, Kochia including Group 2, 4, 9 resistant, Large crabgrass, Palmer amaranth, Pennsylvania smartweed, Redroot pigweed, Velvetleaf, Wild buckwheat, Wild mustard including Group 2 resistant; Suppression: Downy brome, Foxtail barley, Japanese brome, Russian thistle, Volunteer canola, Wild oats178–267 mL/acre–
WheatAnnual sowthistle, Canada fleabane, Cleavers, Common Barnyard grass, Common chickweed, Common lamb's-quarters, Common ragweed, Common Waterhemp including Group 2, 5, 9 resistant biotypes, Dandelion, Eastern black nightshade, Green foxtail including Group 1 and 2 resistant, Green pigweed, Hairy nightshade, Kochia including Group 2, 4, 9 resistant, Large crabgrass, Palmer amaranth, Pennsylvania smartweed, Redroot pigweed, Velvetleaf, Wild buckwheat, Wild mustard including Group 2 resistant; Suppression: Downy brome, Foxtail barley, Japanese brome, Russian thistle, Volunteer canola, Wild oats178 mL/acre–
WheatAnnual sowthistle, Canada fleabane, Cleavers, Common Barnyard grass, Common chickweed, Common lamb's-quarters, Common ragweed, Common Waterhemp including Group 2, 5, 9 resistant biotypes, Dandelion, Eastern black nightshade, Green foxtail including Group 1 and 2 resistant, Green pigweed, Hairy nightshade, Kochia including Group 2, 4, 9 resistant, Large crabgrass, Palmer amaranth, Pennsylvania smartweed, Redroot pigweed, Velvetleaf, Wild buckwheat, Wild mustard including Group 2 resistant; Suppression: Downy brome, Foxtail barley, Japanese brome, Russian thistle, Volunteer canola, Wild oats178 mL/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 203 g/L
Group 15
CAS 447399-55-5
flumioxazin 160 g/L
N-phenylphthalimide herbicide
Mode of action: PPO inhibitor (HRAC 14, N-phenylphthalimide)
CAS 103361-09-7
Formulation
suspension concentrate
Resistance group
Group 14 and Group 15
First registered
2020-09-10
Registration expiry
2028-12-31