197-2 Renovation of Established Golf Course Putting Greens Using Non-Disruptive Techniques.

See more from this Division: C05 Turfgrass Science
See more from this Session: Graduate Student Oral Competition: Fertilization, Soil and Thatch Management, Cultivation Practices, Plant Growth Regulation, Turf Establishment
Tuesday, November 2, 2010: 8:15 AM
Long Beach Convention Center, Room 301, Seaside Level
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Marcus Jones and Nick Christians, Iowa State University, Ames, IA
Traditional conversion involving complete renovation is costly and time consuming.  The objectives of this research were to determine the effect of propagule pressure, bispyribac-sodium, and paclobutrazol on the succession of an established golf course putting green to ‘Penn A-4’ creeping bentgrass (Agrostis stolonifera L.).  Plots were located on an established practice putting green maintained at 3.2-mm.  The green was comprised of an unknown cultivar of creeping bentgrass and annual bluegrass.  Experimental design was a split block where seed sown in strips across each replicated block were whole plot treatments and applications of bispyribac-sodium or paclobutrazol were sub-plots.  A Maredo seeder with vibratory spikes was used throughout the season to seed into the existing canopy at 73 kg ha-1 for seasonal totals of 220 or 659 kg ha-1.  Bispyribac-sodium was applied every 14 d at 24 g a.i. ha-1 starting 4 June 2010 and concluding 16 July 2010 for a total of four applications.  A fifth and final application of bispyribac-sodium was made 1 October 2010 at the same rate.  Paclobutrazol was applied every 14 d at 105 g a.i. ha-1 starting 4 June 2010 and concluding 10 September 2010 for a total of eight applications.  Cultivar identification was performed using random amplified polymorphic DNA (RAPD) markers.
See more from this Division: C05 Turfgrass Science
See more from this Session: Graduate Student Oral Competition: Fertilization, Soil and Thatch Management, Cultivation Practices, Plant Growth Regulation, Turf Establishment