Fungicide Application for Blackleg in Canola
In fields seeded to canola without knowledge of the blackleg strains present, seeding a canola hybrid without blackleg resistance or a tight rotation; a foliar fungicide can help decrease this risk.
Moist conditions, as seen across the prairies this spring, can elevate the spread of blackleg spores and promote fungal growth. It is best to spray for blackleg on the earlier side of the label recommendation, around the 2-leaf stage to see the largest ROI.
BUMPER® 432 EC (Group 3) is a great and safe option to add to your first pass herbicide application. As with any fungicide, water volumes should be kept at the recommended rate to see the best results.
MAXENTIS® (Group 3 & 11) features two distinct, elite modes of action for resistance management along with long-lasting systemic activity. For Blackleg, apply at a NEW rate of 253 mL/ac at the 2-6 leaf stage. For Sclerotinia, apply at a rate of 443 mL/ac at the 20-50% bloom stage.
Product Information
| Fungicide Product | Active Ingredient | Ac/unit | Rate |
|---|---|---|---|
| BUMPER® 432 EC | Propiconazole | 40 ac/jug | 120ml/ac |
| MAXENTIS® | Azoxystrobin 120 g/L + Prothioconazole 90 g/L as an EC |
19-33 ac/jug | 267-467ml/ac |
Melissa Ostash - Technical Sales Agronomist (Manitoba)
Always read and follow pesticide label directions. Any questions can be directed to your local Area Business Manager or Technical Sales Agronomist here.
Sources:
- Canola Council - 2024