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SECTION XX <br /> LAWN BOWLING <br /> A. General Specification, Lawn Bowling <br /> Mowing, irrigation, and fertilizing are the primary turfgrass practices needed to sustain a turf <br /> surface of acceptable quality on a bowling green. Mowing, irrigation, and fertilizing are interrelated <br /> to such a degree that a reduction in leaf area by reducing the mowing height or using the vertical <br /> mowers too aggressively would require an adjustment in the frequency and intensity of fertilizing <br /> and irrigation. <br /> Throughout the growing season, the turfgrass grows both vertically and horizontally. When the <br /> turfgrass grows, it gets longer, and the matt gets thicker. Correct mowing of the lawn bowls green <br /> maintains the smooth and consistent rolling of the bowls, and the grass shall not get longer and <br /> thicker to maintain an ideal playing surface. <br /> 1. Equipment required for The Santiago Park Lawn Bowling Greens are required: <br /> a. Scott Bonner 30" Queen Mower 16-blade reel mower with a Honda <br /> 5.5 hp gas engine, OR EQUAL <br /> b. Groomer OJLBC-20002-08, OR EQUAL <br /> c. Sand Spreader OJLBC-2005-07, OR EQUAL <br /> d. GROUNDSMAN AERATOR OJLBC-1998-05Model 460, OR EQUAL <br /> B. Mowing <br /> 1. Bowling at the Santiago Park greens must be done in a north-south direction. Mowing <br /> should be done at a 45-degree angle to the roll of the bowl. Therefore, the mowing <br /> directions at the green should be northwest to southeast or northeast to southwest. <br /> Contractor must perform mowing as follows: <br /> a. These directions should be rotated each time mowing is done. <br /> b. During the months of April through November, mow two (2) times per <br /> week; set mower height to 1/8". <br /> c. During the months of October through March, mow once per week; <br /> set mower height to 1/4'. <br /> d. Overlap each pass of the mower by 50%. <br /> e. The Scott Bonner blade is sharpened at a 90-degree angle, enabling <br /> the blade to be removed and reversed. When both sides of the reel <br /> are dull, the blade is removed and back lapped. <br /> 2. Dethatching/Verticutting : <br /> a. Contractor must remove thatch material to allow proper water and <br /> nutrient permeability. Thatch is a buildup of dead and decaying <br /> herbaceous material at or slightly below the ground level. If thatch <br /> remains, the turf builds up unevenly and is more susceptible to fungus <br /> infections. The thatch slows the roll of the bowl and can alter the <br /> course of the roll. <br /> b. Contractor must remove thatch during the months of April through <br /> November Verticut, dethatch, and level green twice a week. Set <br /> cutting blades' height to inch in depth. <br /> RFP 23-151 Landscape Maintenance Services Page 69 of 135 <br />