Evaluation of fall and spring headway applications for spring dead spot control in a 'Tifdwarf putting green, 2012 - 2014

摘要

This evaluation was conducted at the Grenada Country Club in Grenada, MS on a bermudagrass putting green with a history of spring dead spot incidence. The putting green was a native push-up that was topdressed biweekly throughout the growing season. Mowing was conducted daily at 0.125-in., and fertilizer was applied according to a putting greens management program. Plots measured 4 ft x 13 ft and fungicide treatments were applied to the same plots throughout the duration of the evaluation. The studywas arranged in a randomized complete block design with four replications. Initial fungicide applications were made on 4 Oct 12 with subsequent fall and spring applications made in 2012 and 2013 as noted in the table below. Fungicide treatments were applied in water equivalent to 2.0 gal/1000 sq ft at 40 psi using a CO2-pressurized boom sprayer with two XR Teejet 11006-VS nozzles. Plots were irrigated with approximately 0.25-in. of water immediately following all fungicide applications. Assessments weremade every 14 days in 2013 and every 25 days in 2014. Data were subjected to analysis of variance and means were separated using Fisher's protected least significant difference test at P = 0.05.