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<br />The McElmo data base includes 66 systems. Major crops are alfalfa <br />and pasture grass. The stock reported are up to 200 head of beef and <br />80 head of sheep <br /> <br />'.......... <br />0t~ A summary of benchmark and treatment effects for plans included in <br />the economic database as collected is presented below in table El. <br />System installation data can be found in. tables Pl and Al. <br /> <br />w <br />~ <br />CO Table El <br />00 <br /> <br />Benchmark and Treatment Effects of Salinity Control Practices <br /> <br />Benchmark <br /> <br />Group de11verv systems <br /> <br />System type <br />Average Number of Units served <br />Average System length <br />Salt savings per contract <br />Conveyance Efficiency . <br />Average Seepage Reduction <br />Labor per contract <br /> <br />unlined ditch <br />6.18 # <br />.5,040 ft <br /> <br />82.2 % <br /> <br />69 hrs <br /> <br />Farm delivery systems <br /> <br />:f~,:::~ <br /> <br />System type <br />Average System length <br />Salt savings per contract <br />Labor per contract <br /> <br />unlined ditch <br />5,474 ft <br /> <br />44 hrs <br /> <br />Field application svstems per acre <br /> <br />System type <br /> <br />unlined ditch <br /> <br />Non Machine Labor <br />for 0 & M of system <br />Number of Irrigations <br />Eff iciency <br /> <br />4.90 hrs <br />5 <br />45 % <br /> <br />Treatment <br /> <br />underground pipe <br />6.18 # <br />3,915 ft <br />37.0 T jyr <br />99.7 % <br />21. 3 ac in <br />90+ % reduction <br /> <br />underground pipe <br />3,114 ft <br />150, T/yr <br />90+-% reduction <br /> <br />bur.:.ed pipe & <br />siderolls <br /> <br />90% + reduction <br />9 <br />65 % <br /> <br />Table E2 shows the average total and annual cost for the installation <br />of.an improved irrigation system (total, government cost share, and <br />producer costs), operation and maintenance costs and cost per ton of <br />salt saved for on-farm systems. Table E3 shows the same values as <br />table E2 except for it displays group system information. Table E4 <br />displays the dollars allocated in the project for fiscal years 1992 <br />and 1993 and the cost per ton of salt saved per the federal <br />procedure. Part of this cost is the operation and maintenance cost <br />of the system which is a producers cost. <br /> <br />17 <br />