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Back to Registered Crop Input Products
Registered Crop Input Products / DUPLEX B® Foliar Fungicide

DUPLEX B® Foliar Fungicide

PCP #35154 · Loveland Products Canada Inc. · Fungicide

Group 3

Group 3 fungicide containing tebuconazole for control of various fungal diseases including rusts, blotches, mildews, and Fusarium Head Blight in wheat, barley, oats, soybeans, asparagus, and SRIC poplar and willow. Contains allergen soy.

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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
AsparagusRust (Puccinia asparagi)118 mL/acre–
AsparagusRust (Puccinia asparagi)118 mL/acre240 d
BarleyNet blotch (Pyrenophora teres), Spot blotch (Cochliobolus sativus), Scald (Rhynchosporium secalis), Leaf rust (Puccinia hordei), Stem rust (Puccinia graminis), Stripe rust (Puccinia striiformis)89–118 mL/acre36 d
BarleySeptoria leaf blotch (Septoria passerinii), Powdery mildew (Erysiphe graminis)89–118 mL/acre36 d
CerealsNet Blotch (Pyrenophora teres), Spot Blotch (Cochliobolus sativus), Scald (Rhynchosporium secalis), Leaf Rust (Puccinia hordei), Stem Rust (Puccinia graminis), Stripe Rust (Puccinia striiformis)89–118 mL/acre36 d
CerealsSeptoria Leaf Blotch (Septoria passerinii), Powdery Mildew (Erysiphe graminis)–36 d
OatsCrown Rust (Puccinia coronata), Stem Rust (Puccinia graminis)89 mL/acre36 d
OatsCrown rust (Puccinia coronata), Stem rust (Puccinia graminis)89 mL/acre36 d
SoybeanAsian Soybean Rust (Phakopsora pachyrhizi), Frogeye Leaf Spot (Cercospora sojina)89–118 mL/acre20 d
SoybeanAsian Soybean Rust (Phakopsora pachyrhizi), Frogeye Leaf Spot (Cercospora sojina)89–118 mL/acre20 d
WheatFusarium Head Blight (Gibberella zeae/Fusarium graminearum)118 mL/acre36 d
WheatFusarium Head Blight (Gibberella zeae/Fusarium graminearum) - SUPPRESSION118 mL/acre36 d
WheatLeaf Rust (Puccinia triticina), Stem Rust (Puccinia graminis), Stripe Rust (Puccinia striiformis), Septoria Leaf Blotch (Septoria tritici), Tan Spot (Pyrenophora tritici-repentis)89–118 mL/acre36 d
WheatLeaf rust (Puccinia triticina), Stem rust (Puccinia graminis), Stripe rust (Puccinia striiformis), Septoria leaf blotch (Septoria tritici), Tan spot (Pyrenophora tritici-repentis)89–118 mL/acre36 d
WheatPowdery Mildew (Erysiphe graminis)118 mL/acre36 d
WheatPowdery mildew (Erysiphe graminis)118 mL/acre36 d
WheatSeptoria Glume Blotch (Stagonospora nodorum)118 mL/acre36 d
WheatSeptoria glume blotch (Stagonospora nodorum)118 mL/acre36 d
WillowLeaf Rust (Melampsora spp.)118 mL/acre–
WillowLeaf rust (Melampsora spp.)118 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
tebuconazole 430 g/L
Triazole
Mode of action: DMI / sterol biosynthesis inhibitor — CYP51 (FRAC 3, Triazole)
CAS 80443-41-0
Formulation
suspension concentrate
Resistance group
Group 3
First registered
2025-08-22
Registration expiry
2030-12-31