Golf Course Management

JUN 2019

Golf Course Management magazine is dedicated to advancing the golf course superintendent profession and helping GCSAA members achieve career success.

Issue link: http://gcmdigital.gcsaa.org/i/1120384

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68 GOLF COURSE MANAGEMENT 06.19 0.60 0.55 0.50 0.45 0.40 0.35 0.30 0.60 0.55 0.50 0.45 0.40 0.35 0.30 0.60 0.55 0.50 0.45 0.40 0.35 0.30 Control TE Surfactant Surfactant + TE 2014 2015 2016 50% 65% 85% DGCI DGCI DGCI ETos LSD=0.0231 LSD=0.0179 LSD=0.0218 9 8 7 6 5 4 3 2 1 9 8 7 6 5 4 3 2 1 9 8 7 6 5 4 3 2 1 Control TE Surfactant Surfactant + TE 2014 2015 2016 50% 65% 85% Quality Quality Quality ETos LSD=0.9 LSD=0.8 LSD=0.7 exhibited greater green cover at 50% ETos in 2014, at 65% ETos in 2015, and at 50% and 65% ETos in 2016 when compared with the untreated controls (Figure 1). Percent green cover was higher in treated plots (chemicals applied separately or com- bined) irrigated at 65% or 50% ETos than in the control plots. However, percent green Figure 2 (left). Dark green color index (DGCI) of Princess 77 bermudagrass treated either with trinexapac-ethyl (TE), Revolution (Surfactant) or a combination of both products and irrigated at either 50%, 65% or 85% ETos in 2014, 2015 and 2016. Values represent an average of 30 data points and are pooled across six sampling months (June to November) and five replicates. Figure 3 (right). Turfgrass visual quality of Princess 77 bermudagrass treated either with trinexapac-ethyl (TE), Revolution (Surfactant) or a combination of both products and irrigated at either 50%, 65% or 85% ETos in 2014, 2015 and 2016. Values represent an average of 30 data points and are pooled across six sampling months (June to November) and five replicates. Dark green color index Visual quality over three years

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