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Back to Registered Crop Input Products
Registered Crop Input Products / PRIMEXTRA II MAGNUM

PRIMEXTRA II MAGNUM

PCP #25730 · Syngenta Canada Inc. · Herbicide

Group 5 and Group 15

Group 5 and Group 15 liquid herbicide containing S-Metolachlor and Atrazine for control of annual grasses, broadleaf weeds, and yellow nutsedge in field corn, hybrid corn, silage corn, sweet corn, and popcorn. Can be applied preplant incorporated, preplant surface, pre-emergent, early post-emergent, or post-emergent. Tank mix options available with glyphosate, dicamba, CALLISTO, and Liberty herbicides in Eastern Canada.

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Registered uses (8)

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

CropTargetRatePHI
CornAnnual Grasses and Broadleaf Weeds1.21–1.62 L/acre80 d
CornAnnual Grasses and Broadleaf Weeds1.21–1.62 L/acre80 d
CornAnnual Grasses and Broadleaf Weeds1.21–1.62 L/acre80 d
CornAnnual Grasses and Broadleaf Weeds1.21–1.62 L/acre80 d
CornAnnual Grasses and Broadleaf Weeds1.01 L/acre80 d
CornCrabgrass (smooth & hairy), Barnyard Grass, Foxtail (green, yellow, giant), Witchgrass, Fall Panicum, American Nightshade, Lady's-thumb, Yellow Nutsedge, Eastern Black Nightshade, Wild Mustard, Purslane, Prostrate Pigweed, Buckwheat, Smart Weed, Ragweed, Redroot Pigweed, Lamb's-quarters1.21–1.62 L/acre80 d
Field CornTall Waterhemp1.62 L/acre80 d
Sweet CornAnnual Grasses and Broadleaf Weeds1.21–1.62 L/acre45 d

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
s-metolachlor 400 g/L
Mode of action: VLCFA inhibitor (HRAC 15, Chloroacetamide)
CAS 87392-12-9
atrazine 320 g/L
Triazine herbicide
Mode of action: PSII inhibitor (HRAC 5, Triazine)
CAS 1912-24-9
Formulation
liquid
Resistance group
Group 5 and Group 15
First registered
1998-11-12
Registration expiry
2029-12-31