Golf Course Management

OCT 2018

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

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70 GOLF COURSE MANAGEMENT 10.18 and Country Club, Fayetteville, N.Y. At both sites, five common vegetation manage - ment practices were applied to the plots. We then sampled plots on both golf courses in spring 2017 to assess natural weevil densities. At one site (Ithaca), adult weevils were con - fined to mesh cages at the soil surface during the winter of 2016-2017 to evaluate overwin - tering success among the different vegetation management treatments. Site establishment e experiment was carried out on golf courses in Tompkins County and Onon - daga County, N.Y. In fall 2016, six repli- cate blocks, each about 20 feet × 20 feet (6 × 6 meters), were established on each course. Each block was divided into five 6.5- × 6.5- foot (2- × 2-meter) plots, each spaced 6.5 feet apart. All blocks were separated by about 10 feet (3 meters). At each site, the entire ex - perimental area was established in a 65.6- × 131-foot (20- × 40-meter) area within a sin - gle golf course natural area running adjacent to, and approximately 5 to 10 feet (1.5 to 3 meters) from, mowed rough (Figure 1). In October through November of 2016, each plot received one of the following five treat - ments: 1) mowing without removing clip- pings; 2) mowing and removing clippings; 3) herbicide application; 4) herbicide application, mowing, and removal of clippings; or 5) un - managed control. Plots were assigned evenly to each replicate block. All mowing within plots was done with a walk-behind mower to minimize equipment traffic between plots. In clipping-removal treatment plots, clippings were collected using an attachable bag on the mower (Figure 2). e bag was removed for plots where clippings were retained. Herbi - cides were applied with a backpack sprayer. Annual bluegrass weevil field arenas e initial intent of the project was to monitor naturally overwintering weevil pop - ulations, but densities of adult weevils ob- served in the area of the experiments were low late in the season. erefore, to ensure that weevils were present so that treatments could be evaluated, weevils were placed in small mesh sleeves ("cages") at the soil sur - face within the plots at Robert Trent Jones GC. e sleeves, which were made of alu - minum window mesh, were cylindrical and Figure 2. A treatment plot at the Robert Trent Jones GC is shown after mowing and clipping removal. Figure 3. Weevils were added to a mesh sleeve (top), and then the closed sleeve containing soil and weevils was inserted into the soil.

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