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DISEASE CONTROL

Dollar Spot

Clarireedia jacksonii (formerly Sclerotinia homoeocarpa)

The disease name for dollar spot is derived from its symptomology on turfgrass; bleached to straw-colored spots roughly the size of a silver dollar. Dollar spot occurs on most cool- and warm-season turfgrass species.

Under close mowing conditions the sunken, circular straw-colored spots are distinct; however, with higher cutting heights, the bleached turf spots are typically irregularly shaped. As disease progresses, the spots can coalesce, causing a more general blighted appearance. In early morning, when dew is still present on the grass, a white web-like growth of the fungal mycelium may be observed, but will disappear as the dew evaporates and leaves dry. 

 

On individual grass blades damaged tissue first appears as dark, watersoaked lesions. Eventually, the lesions turn light tan to straw-colored with a reddish brown border. Often the lesions will appear hour-glass shaped.

 

Dollar spot commonly occurs from late spring through late fall or early winter. Humid weather with warm days, cool nights, and heavy dew is necessary for fungal growth and development. Dollar spot is less prominent in hot or dry weather. The pathogens persist during periods of unfavorable development on leaf tissue and debris.

The cornerstone of your dollar spot program

The most effective way to control dollar spot is to stay ahead of it. With Xzemplar® fungicide as the cornerstone of your spray program, coupled with other BASF fungicides, you’re equipped with one of the industry’s strongest lines of defense against dollar spot. Just six critical applications of BASF fungicides will help protect your turf from dollar spot, brown patch and summer patch.


Start early.

Treat your fairways with one application of Emerald® fungicide in the early spring for superior disease control on most major turfgrass species. Follow with one application of Xzemplar fungicide in late spring.

Cool Season 28-Day Fairway Program

App # Product Timing
Rate/ 1,000 sq ft
Disease Target Application Volume
1 Emerald fungicide April 15 0.18 fl oz Dollar spot 1-2 gals/1,000 sq ft
2
Xzemplar fungicide May 15 0.26 fl oz Dollar spot, summer patch 1-2 gals/1,000 sq ft
3 Honor® Intrinsic®
brand fungicide
June 15 1.10 fl oz Dollar spot, brown patch,
summer patch, fairy ring
1-2 gals/1,000 sq ft
4 Xzemplar fungicide July 15 0.26 fl oz Dollar spot, brown patch,
summer patch, fairy ring
1-2 gals/1,000 sq ft
5 Xzemplar fungicide Sept 15 0.26 fl oz Dollar spot 1-2 gals/1,000 sq ft
6 Emerald fungicide Oct 15 0.18 fl oz Dollar spot 1-2 gals/1,000 sq ft

Start date to be determined by making first application when soil temps are 50˚F and turf has been mowed a minimum of three times. For improved fairy ring control, apply a soil wetting agent 1-2 weeks prior to beginning fungicide applications.

 

Apply Xzemplar fungicide in a program alternating or tank mixing with other registered fungicides that have a different mode of action. Follow Xzemplar fungicide label instructions on sequential use specific to target pathogens and other Group 7 products.

 

Stay on course.

During mid summer, apply Honor Intrinsic brand fungicide for long-lasting control of dollar spot and other target diseases plus the plant health benefits offered by Intrinsic brand fungicides, including longer, stronger roots and greater stress tolerance. Follow in late summer with one application of Xzemplar fungicide for control of dollar spot, brown patch and summer patch.


Finish strong.

In early fall, apply Xzemplar fungicide for continued dollar spot control. Later in the fall, apply Emerald fungicide to help maintain championship conditions your players will enjoy all season.

BASF Regional Turf Spray Programs

The BASF regional turf spray programs are specially designed to provide proven disease control and a rotation management program in your specific geographic area. Use them to help integrate dollar spot control into your year-round spray program.