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Registered Crop Input Products / Fierce® Herbicide

Fierce® Herbicide

PCP #31117 · Valent Canada Inc. · Herbicide

Group 14 and Group 15Registration expired

Group 14 and Group 15 dual-active herbicide containing flumioxazin and pyroxasulfone for preemergence and burndown control of broadleaf and grass weeds in soybeans, chickpeas, field peas, lentils, field corn, spring wheat, winter wheat, and non-crop areas. Provides residual control of resistant biotypes including Group 1, 2, 4, and 9 resistant weeds.

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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
ChickpeaCommon lamb's-quarters, common ragweed, common waterhemp, dandelion, eastern black nightshade, green foxtail (including Group 1 and 2 resistant), green pigweed, hairy nightshade, large crabgrass, Palmer amaranth, Pennsylvania smartweed, redroot pigweed, velvetleaf, wild buckwheat, wild mustard (including Group 2 resistant), kochia (including Group 2, 4, and 9 resistant), Canada fleabane, common chickweed, annual sowthistle, common barnyard grass, cleavers85 g/acre–
ChickpeaCommon lamb's-quarters, common ragweed, common waterhemp, dandelion, eastern black nightshade, green foxtail (including Group 1 and 2 resistant), green pigweed, hairy nightshade, large crabgrass, Palmer amaranth, Pennsylvania smartweed, redroot pigweed, velvetleaf, wild buckwheat, wild mustard (including Group 2 resistant), kochia (including Group 2, 4, and 9 resistant), Canada fleabane, common chickweed, annual sowthistle, common barnyard grass, cleavers85–127 g/acre–
CornCommon lamb's-quarters, common ragweed, common waterhemp, dandelion, eastern black nightshade, green foxtail (including Group 1 and 2 resistant), green pigweed, hairy nightshade, large crabgrass, Palmer amaranth, Pennsylvania smartweed, redroot pigweed, velvetleaf, wild buckwheat, wild mustard (including Group 2 resistant), kochia (including Group 2, 4, and 9 resistant), Canada fleabane, common chickweed, annual sowthistle, common barnyard grass, cleavers85 g/acre–
Field PeaCommon lamb's-quarters, common ragweed, common waterhemp, dandelion, eastern black nightshade, green foxtail (including Group 1 and 2 resistant), green pigweed, hairy nightshade, large crabgrass, Palmer amaranth, Pennsylvania smartweed, redroot pigweed, velvetleaf, wild buckwheat, wild mustard (including Group 2 resistant), kochia (including Group 2, 4, and 9 resistant), Canada fleabane, common chickweed, annual sowthistle, common barnyard grass, cleavers85 g/acre–
Field PeaCommon lamb's-quarters, common ragweed, common waterhemp, dandelion, eastern black nightshade, green foxtail (including Group 1 and 2 resistant), green pigweed, hairy nightshade, large crabgrass, Palmer amaranth, Pennsylvania smartweed, redroot pigweed, velvetleaf, wild buckwheat, wild mustard (including Group 2 resistant), kochia (including Group 2, 4, and 9 resistant), Canada fleabane, common chickweed, annual sowthistle, common barnyard grass, cleavers85–127 g/acre–
LentilCommon lamb's-quarters, common ragweed, common waterhemp, dandelion, eastern black nightshade, green foxtail (including Group 1 and 2 resistant), green pigweed, hairy nightshade, large crabgrass, Palmer amaranth, Pennsylvania smartweed, redroot pigweed, velvetleaf, wild buckwheat, wild mustard (including Group 2 resistant), kochia (including Group 2, 4, and 9 resistant), Canada fleabane, common chickweed, annual sowthistle, common barnyard grass, cleavers85–127 g/acre–
Non-Crop AreasNon-selective vegetation control85–127 g/acre–
SoybeanCommon lamb's-quarters, common ragweed, common waterhemp, dandelion, eastern black nightshade, green foxtail (including Group 1 and 2 resistant), green pigweed, hairy nightshade, large crabgrass, Palmer amaranth, Pennsylvania smartweed, redroot pigweed, velvetleaf, wild buckwheat, wild mustard (including Group 2 resistant), kochia (including Group 2, 4, and 9 resistant), Canada fleabane, common chickweed, annual sowthistle, common barnyard grass, cleavers85–127 g/acre–
WheatCommon lamb's-quarters, common ragweed, common waterhemp, dandelion, eastern black nightshade, green foxtail (including Group 1 and 2 resistant), green pigweed, hairy nightshade, large crabgrass, Palmer amaranth, Pennsylvania smartweed, redroot pigweed, velvetleaf, wild buckwheat, wild mustard (including Group 2 resistant), kochia (including Group 2, 4, and 9 resistant), Canada fleabane, common chickweed, annual sowthistle, common barnyard grass, cleavers85 g/acre–
WheatCommon lamb's-quarters, common ragweed, common waterhemp, dandelion, eastern black nightshade, green foxtail (including Group 1 and 2 resistant), green pigweed, hairy nightshade, large crabgrass, Palmer amaranth, Pennsylvania smartweed, redroot pigweed, velvetleaf, wild buckwheat, wild mustard (including Group 2 resistant), kochia (including Group 2, 4, and 9 resistant), Canada fleabane, common chickweed, annual sowthistle, common barnyard grass, cleavers85 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
2013-11-07
Registration expiry
2025-12-31