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6.1.2 Mechanical <br />Mechanical control of weeds includes the use of physical methods to injure and /or kill the weed. <br />Mechanical control includes such practices as mowing, cutting, flooding, and burning. The <br />mechanical control must be timed correctly to achieve the desired effect. Burning will not be <br />employed as a control mechanism on this Site. <br />6.1.3 Biological <br />Biological control of weeds includes the use of organisms to injure and /or kill the weed. <br />Biological control includes such practices as livestock grazing by specific animals or release of <br />insects which consume foliage or other parts of the weed. <br />6.1.4 Cultural <br />Cultural control of weeds includes primarily intensive revegetation by desirable species in <br />attempt to outcompete the weeds. Cultural control must be aggressive and timed correctly to <br />achieve the desired effect. <br />6.1.5 Administrative <br />Administrative control of weeds includes the incorporation of rules, regulations, or guidelines to <br />prevent new weeds from growing. Permitting only weed -free seed mixes and mulch, washing all <br />heavy equipment prior to entry on site, and incorporation of similar practices into the covenants <br />and regulations for the development are examples of administrative controls. <br />6.2 INTEGRATED WEED MANAGEMENT <br />Integrated weed management is an approach that incorporates more than one method of control <br />for weeds. Administrative control will be incorporated for all weed species presently known to <br />exist on site and may be expanded to include additional weeds at a later date. <br />6.2.1 Salt cedar <br />6.2.1.1 Mechanical <br />Mechanical control includes the manual removal of the plant including the root system. This can <br />be accomplished by hand pulling small plants or use of heavy equipment for larger plants. Most <br />of the root structure must be removed and destroyed since salt cedar can readily reproduce from <br />cut stems and sections of buried roots. <br />Mechanical control can also include the cutting of the stem of the tree below the water surface <br />and allowing the cut stem to remain submerged for a minimum of three months. <br />6.2.1.2 Chemical <br />Chemical control includes foliar, basal bark, and cut -stump application of herbicides. Herbicides <br />effective on salt cedar include imazapyr, mixtures of imazapyr and glyphosate, or triclopyr. Due <br />Weed Management Plan 5 <br />k -&? <br />