Leaf Spot and Dollar Spot Disease Management

Cultural and disease management programs are essential for maintaining high quality turf all season long. Prevent both leaf spot and dollar spot activity by using a broad-spectrum fungicide like ArmorTech®TMI 2020 XL. With two powerful active ingredients, Thiophanate-methyl and Iprodione, TMI 2020 XL offers different modes of action in one convenient product.

As a reminder, be sure to check your water pH before adding your fungicide to the tank. High water pH will cause alkaline hydrolysis, thus, reducing your chemical performance. Chem-Stik LpH™ by Precision can be a great tool for monitoring water pH.

Begin your spray program on greens, tees or fairways for preventative maintenance. Be sure to select the proper spray nozzle and volume of water for uniform coverage. One to two gallons of water per M will offer adequate coverage, allowing the spray mixture to cover the leaf surface and the active ingredients to be absorbed. Continue for 7 to 14 days; then rotate to a fungicide consisting of a different action mode such as DMI, contacts, or the new SDH-I’s. Add ArmorTech® Optimizer™ Green Shade to improve turf color and quality to help manage stresses and moisture.

Turfgrass Application Rates for TMI 2020 XL (Dollar/Leaf Spot)

Use Site	Timing	Disease Pressure	Rate/M	Notes
Tees/Greens/Aprons	Spring-Summer	Light-Medium	1-2 oz or 2-4 oz	Apply 7-14 days
Fairways	Spring-Summer	Light-Medium	1-2 oz or 2-4 oz	Apply 7-14 days