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Level of Nitrogen Reduction: The proposed level of nitrogen reduction to be achieved with this <br /> strategy should be developed with the golf course superintendents through the stakeholder <br /> process described above. If, for discussion purposes, a fertilizer application rate of one lb/1,000 <br /> sq. ft. on rough areas is selected, it appears that a 40%reduction may potentially be achieved by <br /> limiting fertilizer applications on golf course roughs only. This is documented in Table 4. The <br /> MEP model assumed that the Captains Golf Course applies four lbs N/1,000 sq. ft. of rough area. <br /> The model also assumed that the Cape Cod National and Eastward Ho! courses use two lbs <br /> N/1,000 sq. ft. of rough area. In each case the amount of rough area fertilized is similar to that <br /> for fairways, greens and tees combined. <br /> Table 4. Golf course nitro en load reduction potential from rough areas <br /> Rough Modeled Pro osed Reduction <br /> Golf course Area Rate Rate <br /> 1,000 Load Load Load <br /> ( (lbs/1,000 Obs/1,000 <br /> sq. ft.) sq. ft.) (lbs) sq. ft.)' (lbs) (lbs) <br /> Cape Cod National 2,373 2 4,746 1 2,373 2,373 <br /> Eastward Ho! CC 1,490 2 2,980 1 1,490 1,490 <br /> Captains Golf Course 3,902 4.5 17,559 1 3,902 13,657 <br /> Chatham Seaside Links 76 1 2 1 1,530 1 765 765 <br /> Total 18,285 <br /> Total leached 3,657 <br /> If the loading rate is reduced to one lb N/1,000 sq. ft. of rough,the 40%reduction is achieved. <br /> This may need to be adjusted after the stakeholder process is completed, but if possible,this <br /> would mean the overall nitrogen load from golf courses would be reduced from 8.3%of the <br /> controllable load to Pleasant Bay to 4.8%. This is a significant reduction just from managing <br /> golf course rough, without changing the fertilizer practices on the main golf playing surfaces. <br /> Again, this change could be done through reducing the fertilizer applications to all rough areas, <br /> or reducing the size of the rough area that receives fertilizer. <br /> To provide flexibility to golf course managers, each golf course could identify the appropriate <br /> level and location (e.g.,type of turf, size of fertilized area) of fertilizer reduction, that meets an <br /> overall reduction of 40% across all golf courses. This could be implemented on a rolling average <br /> across five years. <br /> This approach allows golf course managers flexibility in achieving the required reductions on a <br /> five-year basis and reductions can be made through any combination of a reduction in area <br /> fertilized or a reduction in fertilizer application on roughs, greens,tees, and/or fairways. It <br /> should be noted that some golf courses have already reduced their fertilizer use since the MEP <br /> model was developed. For example, Captains Golf Course has already achieved a 38%reduction <br /> in fertilizer load application in 2009 as compared to the MEP model by switching to slow-release <br /> fertilizer products. This reduction represents an overall reduction of 24%of golf course fertilizer <br /> application. <br /> Pleasant Bay Fertilizer Management Plan 32 Horsley Witten Group,Inc. <br /> Final Report December 2010 <br />