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<br />i,'j <br />...-I <br />~ <br />c: <br />'.::-:;. <br /> <br />:__i <br /> <br />TABLE 11 <br /> <br />BBlfCBMAlUt AND TREATMEllT EFFECTS OF SALINITY CONTROL PRACTICES <br /> <br />Benchmark <br /> <br />Group delivery systems <br /> <br />System type <br />System length <br />Seepage <br />Salt savings <br />Labor <br /> <br />unlined ditch <br />3,690 ft <br />445 in/yr <br /> <br />128 hrs <br /> <br />Farm delivery systems <br /> <br />System type <br />System length <br />Seepage <br />Salt savings <br />Labor <br /> <br />unlined ditch <br />11,540 ft <br />403 in/yr <br /> <br />288 hr <br /> <br />Field application systems <br /> <br />Benchmark <br /> <br />System type <br />Irrigations <br />Water applied <br />Runoff <br />Efficiency <br />Deep percolation <br />Salt savings <br /> <br />unlined ditch <br />9.7 <br />35.5 in/irr <br />19.8 in/irr <br />37 <br />4.5 in/irr. <br /> <br />Estimated government costs <br /> <br />Benchmark <br /> <br />Cost share (total) <br />Cost share (farm) <br />Cost share (group) <br />Cost share/contracted acre <br />Cost share/T salt saved (farm) <br />Cost share/T salt saved (group) <br />Cost share/T salt saved (total) <br /> <br />Treatment <br /> <br />underground pipe <br />3,820 ft <br />appro 0 <br />173.6 T/yr <br />90+ % reduction <br /> <br />underground pipe <br />15,812 ft <br />appro 0 <br />283.3 T/yr <br />80+ % reduction <br /> <br />Treatment <br /> <br />buried & gated pipe <br />9.1 <br />24.3 in/irr <br />11. 7 in/ irr <br />64 <br />1. 9 in/ irr . <br />360 T/yr. <br /> <br />Treatment <br /> <br />$170,516 <br />$130,238 <br />$40,278 <br />$692 <br />$459 <br />$232 <br />$373 <br /> <br />41 <br />