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<br />two years. Use of this tool for irrigation timing needs to be <br />confirmed, and additional information provided on ,recommended <br />time of set. <br /> <br />f:>~':.. <br />.....'1 <br />':~\~' <br /> <br />w- <br />r,;,j, Site 19 <br />\Q, Earth ditch to feeder ditch. This system is scheduled for <br />~, replacement by pipeline to gated pipe. Landowner continues to <br />have some problems with existing system; Soil moisture needs <br />to be identified prior to irrigation events and this <br />communicated to landowner. wit~ an improved system, irrigation <br />water management will become much more possible. <br /> <br />Site 20 <br />Earth ditch to feeder ditch. Same system is scheduled for use <br />in 1994. Regularly scheduled irrigations (every two weeks) are <br />done but the landowner has expressed a willingness to visit <br />about IWM. <br /> <br />site 21 <br />Pipeline to gated pipe. with Colorado State University <br />Cooperative Extension furnished surge valve and controller. <br />This system shoUld be adequate for good control of water <br />application and the landowner is willing to communicate about <br />irrigation water management. Soil moisture condition needs to <br />be identified prior to irrigation events and this communicated <br />to landowner. In 1994 this will be a cooperative CSUCE and SCS <br />effort. <br /> <br />I <br />I <br /> <br />."~.:., <br />. +~3~;; <br /> <br />Site 22 <br />Pipeline to gated pipe. The total field of 58 acres was not <br />monitored. On the west end of the field, two identical 7 acre <br />blocks were irrigated. Comparison of IWM and crop yields was <br />done on the block that was irrigated using surge and the ~lock <br />that was irrigated by using conventional gated pipe. <br /> <br />This system should be adequate for good control of water <br />application and landowner is willing to communicate about <br />irrigation water management. soil moisture condition needs to <br />be identified prior to irrigation events and this communicated <br />to landowner. <br /> <br />3. Well data none <br /> <br />4. Water and salt budgets <br />Salt contribution: It is estimated that about 1,400,000 tons <br />of salt are contributed annually to the Colorado River thru <br />deep percolation and seepage. About 840,000 tons are <br />attributed to irrigated agriculture on approximately 171,000 <br />acres. <br />Initial goals are to reduce salt loading to the Colorado River <br />by 280,500 tons annually at the end of the projected 20 year <br />application of the program. <br /> <br />{r: <br />....::.j.' <br /> <br />16 <br />