Laserfiche WebLink
2 <br /> Dr. Trenholm's research showed a nitrate recovery rate of between 20%-30% of the total mass balance <br /> of applied nitrogen. This reflects the fact that N was also lost in ways other than leaching but <br /> volatilization and runoff were not measured or addressed in her research. <br /> RE: IFAS recommendations related to the use of 50% slow release nitro en <br /> 1. FDEP-IFAS FYN Handbook 2009 Edition The Florida Yards &Neighborhoods Handbook <br /> P 25: "Slow and controlled release fertilizers provide nutrients to plant roots over an extended <br /> period of time. This allows you to fertilize less frequently—and to prevent nutrients from <br /> leaving your landscape and entering waterways, contributing to harmful algal blooms and other <br /> water quality problems...it's a good idea to look for a fertilizer with higher amounts of slow- <br /> release nitrogen." <br /> P 26: "If using a quick release product, apply only up to 0.5 pound of nitrogen per 1000 <br /> square feet." <br /> 2. 2008 FDEP Florida Friendly Best Management Practices for Protection of Water Resources <br /> by the Green Industries(GI BMP Manual)http://fyn.ifas.ufl.edI/pdf/gm-ind-bmp-en-12- <br /> 2008.pdf <br /> P 29: Nitrogen Rate and Frequency: "To limit the environmental impact of your fertilization <br /> program, it is recommended that no more than 0.5 pounds of water-soluble N per 1,000 <br /> square feet be applied in a normal application. Total N should be limited to 1 lb/1000 ft2, per <br /> the Urban Turf Rule." <br /> 3. General Recommendations for Fertilization of Turfgrasses on Florida Soils SL <br /> 21 htip:Hedis.ifas.ufl.edu/pdffiles/LH/LHO140O.pd <br /> P 3: "In light of potential environmental concerns it is now recommended that no more than one <br /> half(0.5)pound of the nitrogen in the application be in the soluble form. Thus in order to make <br /> an application of 1 pound of actual nitrogen per 1000 square feet of turfgrass you would need to <br /> use a blended fertilizer product containing no more that 50% of the total N in soluble form <br /> with the rest of the nitrogen originating from a slow-release N source." <br /> P 4: "To avoid burn, never apply fertilizer at greater than the recommended rate of 0.5 <br /> pounds of soluble N per 1000 square foot per application. <br />