Managing Global Resources for a Secure Future

2017 Annual Meeting | Oct. 22-25 | Tampa, FL

106799 Seedling Emergence and Establishment of Agrostis Cultivars on a Putting Green Following Simulated Winterkill.

Poster Number 704

See more from this Division: C05 Turfgrass Science
See more from this Session: Turf Science and Management General Poster (includes student competition)

Tuesday, October 24, 2017
Tampa Convention Center, East Exhibit Hall

Devon Carroll, Pennsylvania State University, Thornhurst, PA, John E. Kaminski, 417 Ag Admin Building, Pennsylvania State University, University Park, PA and Peter J. Landschoot, 116 ASI Bldg., Pennsylvania State University, University Park, PA
Abstract:
Low soil temperatures during early spring present a challenge for golf course superintendents attempting to establish creeping bentgrass (Agrostis stolonifera L.; CBG) following winterkill. The objective of this study was to elucidate differences in the rate of seedling emergence and establishment among various CBG cultivars in the early spring. A field study was conducted at the Joseph Valentine Turfgrass Research Center in University Park, PA to assess the establishment of 25 CBG cultivars when seeded into a putting green following a simulated winterkill. Immediately prior to seeding, the entire area was core-cultivated and vertically mowed in two directions to prepare a seedbed. Plots (0.9 x 1.8 m) were seeded on 30 March 2017 at a rate of 73 kg pure live seed ha-2. Seed was mixed with Milorganite (342 kg ha-2) and applied by hand using shaker jars. Following seeding, the entire area was fertilized at a rate of 24 kg N ha-2, topdressed with sand, covered with an Evergreen Turf Cover and rolled. The experimental design was a randomized complete block design with four replications. Seedling vigor was evaluated visually every 3 to 4 days using a 1 to 9 scale where 1 = no emergence and 9 = uniform emergence over the entire plot area. Percent ground cover was rated visually each week on a 0 to 100 scale. All data were analyzed using the MIXED procedure in SAS. On average across all rating dates, individual seed lots of cultivars ‘007’, ‘V-8’, ‘SR1150’, and ‘Pure Select’ had the highest seedling vigor. By 2 June, one treatment seeded with the cultivar ‘V-8’ had the highest percent cover (84%), but was similar to thirteen other cultivars evaluated (69 to 84%).

See more from this Division: C05 Turfgrass Science
See more from this Session: Turf Science and Management General Poster (includes student competition)