Converting Established Putting Greens to Glyphosate-Resistant Creeping Bentgrass. (6342)
Authors:
D.B. Ricker* - Virginia Tech
J.B. Beam - Virginia Tech, Blacksburg, VA W.L. Barker - Virginia Tech, Blacksburg, VA J.B. Willis - Virginia Tech, Blacksburg, VA S.D. Askew - Virginia Tech, Blacksburg, VA
Abstract:
Methods to establish glyphosate-resistant (GR) creeping bentgrass (CB) turf on golf course putting greens that allow the fastest transition and best playing conditions are needed. Optimal seeding times and seeding rates vary from one location to the next and in various seedbeds. A mixed annual bluegrass and CB putting green in Blacksburg, VA was treated with glyphosate 1 d prior to seeding and seeded at 49, 73, and 122 kg/ha on August 20, September 10, and October 3. Seeding in mid August or early September with 122 kg/ha pure live seed promoted the fastest playable putting surface. October seeding dates resulted in poor germination and reduced coverage due to winter seedling injury. Older greens, high in thatch accumulation, require increased seeding rates and more thatch layer disruption in order to successfully transition. Seedbed material is another issue to consider when transitioning to GR CB. Soil based greens will require the most aggressive cultivation methods and highest seeding rates when compared to sand based greens.
Speaker Information: Dan Ricker, Virginia Tech, 435 Old Glade Rd, Blacksburg, VA 24061-0330; Phone:
540 231-5807; E-mail: [email protected]
Session Information: Tuesday, November 2, 2004, 7:25 AM-11:50 AM Presentation Start: 10:00 AM
Keywords: glyphosate resistant; renovation; creeping bentgrass golf greens; Roundup Ready
