10/18/2021 - By Dr. Raymond Snyder

Conclusion:

In a trial conducted in conjunction with the University of Arkansas from June - September 2019, Symphony® applied bi-weekly resulted in higher turf quality and less localized dry spot (LDS) than the untreated control.

Details:

This study was conducted in conjunction with the University of Arkansas in Fayetteville, AR. The study was conducted on a ‘Pure Distinction’ creeping bentgrass putting green. Soil type was a USGA sand-base that contained 1% organic matter. The mowing height was 0.125” throughout this study. Treatment applications were made using a CO₂ sprayer, and treatment applications were made inside a spray shield with a single Tee-Jet nozzle boom at an application volume of 2 gallons per 1,000 ft². Study design was a randomized complete block with four replications. Applications were made monthly on May 22, June 19, July 17, Aug 14, and September 11 of 2019.

Symphony® Application Rate: 5 fl oz/1,000 ft²

Trial set up and spray application technique for wetting agent study at the University of Arkansas.

Turf quality ratings in Symphony® treated plots vs untreated control plots in Arkansas trial during summer 2019. * indicates significant difference in turf quality (P < 0.05).	Cumulative localized dry spot (LDS) ratings in Symphony® treated plots vs untreated control plots in Arkansas trial during summer 2019. Means followed by a different letter are significantly different (P < 0.05).

Drone photos of wetting agent trial at the University of Arkansas in 2019. Photos taken during significant localized dry spot pressure across study area near the end of the trial on September 19. Note the significant turf quality and moisture distribution improvements in the plot treated monthly with Symphony®.