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Registered Crop Input Products / Fierce® MTZ Master Herbicide

Fierce® MTZ Master Herbicide

PCP #35483 · Valent Canada Inc. · Herbicide

Group 5, Group 14, Group 15

Group 5, 14, and 15 suspension concentrate herbicide containing three active ingredients (flumioxazin, metribuzin, pyroxasulfone) for preemergence and burndown control of annual broadleaf and grass weeds in soybeans, chickpeas, field peas, lentils, field corn, spring wheat, fallow land, and non-crop areas. Provides residual weed control including resistant biotypes of green foxtail, wild mustard, and kochia.

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Registered uses (20)

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 broadleaf and grass weeds0.473 L/acre–
ChickpeaAnnual broadleaf and grass weeds0.473–0.708 L/acre–
ChickpeaSee Table 10.473 L/acre–
ChickpeaSee Table 10.473–0.708 L/acre–
CornAnnual broadleaf and grass weeds0.473 L/acre–
CornSee Table 10.473 L/acre–
Fallow LandAnnual broadleaf and grass weeds0.473–0.708 L/acre–
Fallow LandSee Table 10.473–0.708 L/acre–
LentilAnnual broadleaf and grass weeds0.473–0.708 L/acre–
LentilSee Table 10.473–0.708 L/acre–
Non-Crop AreasNon-selective vegetation control including annual broadleaf and grass weeds0.473–0.708 L/acre–
Non-Crop AreasSee Table 10.473–0.708 L/acre–
PeaAnnual broadleaf and grass weeds0.473 L/acre–
PeaAnnual broadleaf and grass weeds0.473–0.708 L/acre–
PeaSee Table 10.473 L/acre–
PeaSee Table 10.473–0.708 L/acre–
SoybeanAnnual broadleaf and grass weeds including common lamb's-quarters, common ragweed, common waterhemp, green foxtail, kochia, volunteer canola0.473–0.708 L/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, Canada fleabane, Common chickweed, Annual sowthistle, Common Barnyard grass, Cleavers, Wild oats, Russian thistle, Downy brome, Japanese brome, Foxtail barley (suppression), Yellow foxtail (suppression), Green smartweed, Lady's-thumb, Stinkweed, Common groundsel, Ball mustard, Corn spurry, Hempnettle, Henbit, Night flowering catchfly, Tartary buckwheat, Wormseed mustard, Volunteer canola0.473–0.708 L/acre–
WheatAnnual broadleaf and grass weeds0.473 L/acre–
WheatSee Table 10.473 L/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
metribuzin 179.2 g/L
Photosynthetic inhibitor
Mode of action: PSII inhibitor (HRAC 5, Triazinone)
CAS 21087-64-9
pyroxasulfone 76.4 g/L
Group 15
CAS 447399-55-5
flumioxazin 59.8 g/L
N-phenylphthalimide herbicide
Mode of action: PPO inhibitor (HRAC 14, N-phenylphthalimide)
CAS 103361-09-7
Formulation
suspension concentrate
Resistance group
Group 5, Group 14, Group 15
First registered
2025-05-20
Registration expiry
2030-12-31