By Lane Tredway, Ph.D., technical services manager for Syngenta

• Issue: Take-all root rot is prevalent on ultradwarf bermudagrass putting greens, especially in the transition zone
• Symptoms:
  • Patchy/ring-like appearance
  • Appears in late summer to fall
  • Can also manifest in winter or early spring during slow or semi-dormant growth
• Challenges with curative control:
  • Bermudagrass recovery is slow during cooler months
  • Pathogens cause damage in summer but are not highly active when symptoms are present

    Photo: Lane Tredway, 2021

• Curative approaches: Limited due to inactive pathogen and slow turf growth
• Preventive approaches:
  • Protect turf from other stresses
  • Support recovery when growth conditions improve

Fungicide Applications

• Tank mixtures for symptom breakthrough
  • Mix: Appear^® II fungicide (6 fl. oz./1,000 ft.²) with either Daconil^® Action™ fungicide (3.5 fl. oz./1,000 ft.²) OR Secure^® Action fungicide (0.5 fl. oz./1,000 ft.²)
  • Frequency: Every 14 days
  • Benefits: 
    • Protects against a range of pathogens and abiotic stresses
    • Promotes faster, more uniform spring greenup and recovery
• Spring recovery support:
  • Product: Briskway^® fungicide
  • Rate: 0.9-1.2 fl. oz./1,000 ft.² for curative rates
  • Advantages: Effective against take-all root rot and other diseases without growth regulation

• Timing: Initiate applications in late summer to fall when soil temperatures drop below 80 F. 
  • Alerts: Sign up for soil temperature alerts for optimal application timing

• GreenTrust^® 365 Spring Dead Spot and Take-all Root Rot Guarantee Program
  • Strategy: Combine Briskway, Posterity^® Forte and Headway^® fungicides for guaranteed control of spring dead spot and take-all root rot

For more information on treating take-all root rot, contact your local Syngenta territory manager.

Always consult the product label for complete use and application information.

All photos are either the property of Syngenta or are used with permission.

© 2024 Syngenta. Important: Always read and follow label instructions. Some products may not be registered for sale or use in all states or counties and/or may have state-specific use requirements. Please check with your local extension service to ensure registration and proper use. Action™, Appear^®, Briskway^®, Daconil^®, GreenTrust^®, Headway^®, Posterity^® and the Syngenta logo are trademarks of a Syngenta Group Company. Secure^® is a registered trademark of Ishihara Sangyo Kaisha, LTD. All other trademarks are property of their respective third-party owners.