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<br />\)\)'3\\)~ <br /> <br />. <br /> <br />- 7 - <br /> <br />. <br /> <br />II. Determine methods of control or elimination of undesirable <br /> <br />phreatophytes. <br /> <br />a. Water management <br /> <br />1. Determine effectiveness of lowering or modifying <br />water table through methods such as channeliza- <br />tion and pumping. <br />2. Determine the effectiveness of surface water <br /> <br />control in preventing seedling establishment. <br /> <br />b. Improved management practices for phreatophyte areas-, <br />1. Determine methods of establishing and managing <br /> <br />desirable replacement vegetation. <br /> <br />2. Basic studies on the physiology, ecology, and <br /> <br />life history, and soil-water relationships of <br /> <br />undesirable phreatophytes and replacement <br /> <br />vegetation. <br /> <br />3. Determine effect of phreatophyte removal on <br /> <br />sheet and gully erosion, stream bank stabilization. <br /> <br />4. Evaluate beneficial use of existing phreatophytes <br />for wildlife shelter and forage and for livestock <br />shelter and forage. <br />c. Control of phreatophytes by chemical or mechanical <br /> <br />means. <br /> <br />l. Determine residual effects of chemicals on water <br /> <br />quality and soils. <br />The estimated annual costs for item (II) is $35,000. <br /> <br />L <br />