studied in 2014. Plots measured 1.5 x 1.5 m and treatments were applied with four replications. The wetting agent treatment list was the same in both years (Table 1). Applications were initiated in early-May of 2015 and applied through mid-October on four week intervals. Spray volume was set at 2gal/1000ft2 and all treatments were immediately watered in with 0.25 to 0.35 in of water. The treatment area was fertilized weekly at 0.10 lb N per 1000ft2. Plots were mowed at 0.125 inch five times per week. Supplemental irrigation was applied only when plots reached a
volumetric water content threshold of 6% (this never occurred in 2015). Plots were evaluated weekly for: − Turfgrass quality (1-9 scale, 6=minimum acceptable): density, uniformity, color and leaf texture. − Volumetric water content (VWC) (TDR 300, Spectrum Tech): average of 5 measurements per plot to 4.8 inches. − Surface firmness (Clegg Impact Soil Tester 0.5 KG model, Lafayette Instruments): weight dropped 4 consecutive times in the same place and
Figure 1. Clegg impact values (surface firmness) measured on June 18th, 2015. Higher values indicate firmer surfaces. p = .038, LSD = 0.86
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