Cereals: Oats: Crown (Leaf) Rust (Puccinia coronata var. avenae)

Excerpt from Chapter 4, Field Crop Protection Guide, Order this publication

Table of Contents

1. Leaf, Stem and Head Diseases
• propiconazole – Tilt 250 E
• propiconazole – Bumper 418 EC
• trifloxystrobin + propiconazole – Stratego 250 EC
• pyraclostrobin - Headline EC
2. Related links...

Leaf, Stem and Head Diseases

European buckthorn is the alternate host. Can be a problem in Central and Eastern Ontario. Use resistant varieties. Plant early to allow plants to mature before inoculum levels become heavy. Remove or destroy buckthorn.

Comments (Days to harvest, label precautions, etc.)
Ground and aerial application. Apply at early signs of disease from tillering to head half emerged. 45 days to harvest.

Comments (Days to harvest, label precautions, etc.)
Ground and aerial application. Apply at early signs of disease from tillering to head half emerged. Can be tank-mixed with several cereal herbicides. 45 days to harvest.

Comments (Days to harvest, label precautions, etc.)
Ground and aerial application. Maximum 2 applications/year. Do not apply the second application within 14 days of the first. Apply only up to flag leaf fully emerged stage (Zadok's 39). Do not apply at boot stage (Zadok's 47) and beyond. 45 days to harvest.

pyraclostrobin - Headline EC

Comments (Days to harvest, label precautions, etc.)
Ground and aerial application. For optimal disease control, apply immediately after flag leaf emergence (Zadok’s 37). Do not apply at boot stage (Zadok’s 47) and beyond. Maximum 2 applications/yr.

Related links...

• Agronomy Guide for Field Crops - Publication 811
• Cereal: Crown (Leaf) Rust
• Diseases
• Cereals