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<br />THE SELECTED PLAN <br /> <br />This section describes elements of the plan selected by local people <br />during public meetings where the alternative plans were discussed, and <br />through written comments submitted following those meetings. Plan 4B is <br />the selected plan. Under that plan recommended management practices <br />will be directed toward minimizing deep percolation losses during each <br />irrigation. <br /> <br />Assuming 80 percent of the private land will receive treatment, about <br />53,000 acres of irrigated cropland and 140,000 acres of non-irrigated <br />grazing land will be improved. An estimated 1,800 operators of farm <br />and ranching units will participate in the improvement program. <br /> <br />Components and costs of the selected plan are: <br /> <br />Component <br /> <br />Cost <br /> <br />Plan for Irrigated land <br /> <br />$21,050,000 <br /> <br />Plan for Privately owned <br />Non~irrigated land <br /> <br />2,570,000 <br /> <br />TOTAL COST <br /> <br />$23,620,000 <br /> <br />IRRIGATED CROPLAND <br /> <br />Management Practices - Management practices necessary for control of <br />irrigation water include size of streamflow, the number of irrigations <br />and the duration and frequency of each irrigation. Because existing <br />water law plays a significant role in the size of stream delivered to <br />each farm, no recommendations for changing that flow rate will be made. <br />However, during field irrigation the flow rate per furrow affects <br />efficiency as well as the potential for salt load pickup. Recommen- <br />dations for the number of furrows to be irrigated at each setting will <br />Be made as a means of controlling the flow rate per furrow. <br /> <br />The duration of each irrigation, determined for crop and soil condition <br />in the field, is the most critical management element affecting effi- <br />ciency and salt loading. This value can be derived for the crop <br />rotation pattern desired for each field and included in the irrigation <br />guide that will form a part of the conservation plan for each farm.... The <br />number of irrigations during the growing season, the final element of_~ <br />management needed to assure application of sufficient water for crop\~, <br />growth, will be included as a recommended management practice. ~c- <br />~ I . <br /> <br />! <br /> <br />56 <br /> <br />~ <br /> <br />"~'. <br /> <br />..',~ <br />