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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 />B. Mowing <br />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 />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 %". <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. DethatchingNerticutting : <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 />