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a. Greens shall be topdressed two to four times per year or in accordance <br />with aeration schedule <br />b. Columbia River Sand shall be- used <br />3.12.6 Verticut shall be performed as needed from March 1s through July 31s as <br />needed to provide smooth and consistent putting conditions <br />3.12.7 Fertilization <br />a. Contractor shall fertilize greens as needed to provide healthy, vigorous <br />turf. <br />b. 4 to 8 pounds, N /1000 square feet per year <br />c. Fertilizer shall be chosen based on soil test analysis but liquid- is <br />recommended <br />3.12.8 Pest Management <br />a. Use Integrated Pest Management (IPM) methodology <br />b. All use of pesticides and schedule thereof shall be approved by the City <br />prior to commencement. <br />3.12.9 Irrigation <br />a. Automatic irrigation system shall be used May 1 3t through October 31 <br />every night to maintain healthy growth at all times <br />b. Repair any damaged component as failure occurs through the operating <br />season <br />3.13 Aprons <br />3.13.1 Mowing <br />a. March 1 3t through October 31 daily <br />and November 1 st through February 28 as needed <br />b. Grass shall be %" height <br />3.14 Collars <br />3.14.1 Mowing <br />a. March 1 st through October 31S daily <br />and November 1 February 2e as needed <br />b. Grass shall be 1 /2" height <br />c. Pattern shall circle green and width shall be 20 to 30 inches <br />3.15 Tee Slopes <br />3.15.1 Mowing <br />a. March 1 St through October 31 two to four times per week to <br />and November 1 st through February 28 as needed <br />b. Grass shall be 1 YV height <br />3.15.2 Fertilizer shall be applied as needed or on same schedule as the tees <br />3.16 Rough <br />3.16.1 Mowing <br />a. March 1 St through. October 31 two to four times per week to <br />and November 1 st through February 2e as needed <br />b. Grass shall be 1 YV in the major play areas and 2'/" outside of the major <br />play areas or as suitable for turf species or desired playing conditions <br />c. Bunker "nose" shall be mowed twice a month March 1 - through October <br />31 and November 1gt through February 28 as needed <br />3.17 Sand Traps <br />3.17.1 Raking <br />