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One of the main things you can do to prevent pollution is to use <br /> caution when applying fertilizers. <br /> n Do not spill fertilizer granules. If you do have an accident,sweep the <br /> granules up. Rinsing fertilizer off with a hose could send it down the storm <br /> drain. <br /> n Do not spread fertilizer onto water bodies or impervious surfaces,such as <br /> driveways or sidewalks.Particles on hard surfaces can wind up in waterways. <br /> n Use a drop spreader,which puts particles down directly beneath the spreader, <br /> rather than a rotary spreader,which flings particles a farther distance. <br /> n Avoid using"weed and feed"products that contain herbicides and fertilizer <br /> together. These products can injure some trees and shrubs. Tree and shrub <br /> root systems can extend far beyond the visible foliage,intermingling with <br /> turf. In addition,pesticides should be applied only to affected areas,rather <br /> than broadcast over the entire yard as occurs with a weed and feed product. <br /> n Do not fertilize if heavy rain is forecast. This increases the potential for <br /> fertilizers to run off into storm drains or to leach through soil with the <br /> rainwater. <br /> n In summer,when turf is actively growing,apply an iron source instead of a <br /> nitrogen fertilizer to green the lawn without increasing growth.Use <br /> chelated iron or iron sulfate. <br /> When should I apply fertilizer to a lawn? <br /> Some parts of Florida have year-round growing seasons; other parts have <br /> dormant lawns for parts of the year. Apply fertilizer when grass is actively <br /> growing,not when it is dormant. Do not apply too much nitrogen at one time <br /> in summer months when grass is already growing rapidly. Consult your county <br /> OF/IFAS Extension office with questions. <br /> Herbicide: a chemical that kills plants or inhibits their growth; <br /> typically intended for weed control <br /> Chelate: a complex organic molecule that surrounds certain trace <br /> elements,such as iron,and keeps them dissolved in a solution <br /> http://turf.ufl.edu/BMPmanual.pdf <br /> sus- i� <br />