Golf Course Management

NOV 2018

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/1042517

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11.18 GOLF COURSE MANAGEMENT 71 Winter fungicide and Proxy treatments Treatment Product/Rate (fluid oz/1,000 square feet) Application dates Utah Colorado Pre-snow fungicide only Post-snow fungicide only + No spring apps Instrata/9 Banner Maxx/2 Nov. 26, 2016 Feb. 15, 2017 Nov. 30, 2016 Feb. 20, 2017 Pre-snow fungicide only Post-snow fungicide only +Spring 1st app +Spring 2nd app +Spring 3rd app Interface/6 + Mirage/2 Mirage/2 Proxy/5 + Primo/0.125 Proxy/5 + Primo/0.125 Proxy/5 + Primo/0.125 Nov. 26, 2016 Feb. 15, 2017 Mar. 10, 2017 Apr. 1, 2017 No 3rd app Nov. 30, 2016 Feb. 20, 2017 Mar. 10, 2017 Apr. 5, 2017 Apr. 20, 2017 Pre-snow fungicide + Proxy Post-snow fungicide only +Spring 1st app +Spring 2nd app +Spring 3rd app Interface/6 + Mirage/2 + Proxy/5 Mirage/2 Proxy/5+Primo/0.125 Proxy/5+Primo/0.125 Proxy/5+Primo/0.125 Nov. 26, 2016 Feb. 15, 2017 Mar. 10, 2017 Apr. 1, 2017 No 3rd app Nov. 30, 2016 Feb. 20, 2017 Mar. 10, 2017 Apr. 5, 2017 Apr. 20, 2017 Pre-snow fungicide only Post-snow fungicide + Proxy +Spring 1st app +Spring 2nd app +Spring 3rd app Interface/6 + Mirage/2 Mirage/2 + Proxy/5 Proxy/5 + Primo/0.125 Proxy/5 + Primo/0.125 Proxy/5 + Primo/0.125 Nov. 26, 2016 Feb. 15, 2017 Mar. 10, 2017 Apr. 1, 2017 No 3rd app Nov. 30, 2016 Feb. 20, 2017 Mar. 10, 2017 Apr. 5, 2017 Apr. 20, 2017 Pre-snow fungicide + Proxy Post-snow fungicide + Proxy +Spring 1st app +Spring 2nd app +Spring 3rd app Interface/6 + Mirage/2 + Proxy/5 Mirage/2 + Proxy/5 Proxy/5 + Primo/0.125 Proxy/5 + Primo/0.125 Proxy/5 + Primo/0.125 Nov. 26, 2016 Feb. 15, 2017 Mar. 10, 2017 Apr. 1, 2017 No 3rd app Nov. 30, 2016 Feb. 20, 2017 Mar. 10, 2017 Apr. 5, 2017 Apr. 20, 2017 Pre-snow fungicide + Proxy Post-snow fungicide only +Spring 1st app +Spring 2nd app +Spring 3rd app Instrata/9 + Proxy/5 Banner Maxx/2 Proxy/5 + Primo/0.125 Proxy/5 + Primo/0.125 Proxy/5 + Primo/0.125 Nov. 26, 2016 Feb. 15, 2017 Mar. 10, 2017 Apr. 1, 2017 No 3rd app Nov. 30, 2016 Feb. 20, 2017 Mar. 10, 2017 Apr. 5, 2017 Apr. 20, 2017 Pre-snow fungicide only Post-snow fungicide + Proxy +Spring 1st app +Spring 2nd app +Spring 3rd app Instrata/9 Banner Maxx/2 + Proxy/5 Proxy/5 + Primo/0.125 Proxy/5 + Primo/0.125 Proxy/5 + Primo/0.125 Nov. 26, 2016 Feb. 15, 2017 Mar. 10, 2017 Apr. 1, 2017 No 3rd app Nov. 30, 2016 Feb. 20, 2017 Mar. 10, 2017 Apr. 5, 2017 Apr. 20, 2017 Pre-snow fungicide + Proxy Post-snow fungicide + Proxy +Spring 1st app +Spring 2nd app +Spring 3rd app Instrata/9 + Proxy/5 Banner Maxx/2 + Proxy/5 Proxy/5 + Primo/0.125 Proxy/5 + Primo/0.125 Proxy/5 + Primo/0.125 Nov. 26, 2016 Feb. 15, 2017 Mar. 10, 2017 Apr. 1, 2017 No 3rd app Nov. 30, 2016 Feb. 20, 2017 Mar. 10, 2017 Apr. 5, 2017 Apr. 20, 2017 Table 1. Winter fungicide and Proxy treatments applied at pre-snow cover and/or post-snow melt timings on mixed annual bluegrass-creeping bentgrass greens in Utah and Colorado. Treatment mixtures were evaluated for turf safety in winter and annual bluegrass seedhead suppression in spring and compared to fungicides-only in winter and traditional spring seedhead programs. winter + the spring program, and fungicide- only treatments followed by no treatments in spring (Table 1). Spring program applications in Utah were made by the author using the same backpack sprayer described previously, on March 10 and April 1, 2017. Spring program applications in Colorado were made by the golf course super - intendent with a Toro 5500 sprayer at 30 psi in

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