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<br />D. JIYDllo-SALDan ~ S~IO.SI <br /> <br />Weather data, for the McElmo Creek M&E program, will be <br />evaluated to estimate evapotranspiration (ET) requirements <br />of the crops. The difference between infiltration and ET <br />will reflect deep percolation. Salt load reduction <br />attributed to irrigation water management will be based on <br />reduced deep percolation. Soil moisture will be monitored <br />to assess the uniformity with which irrigation water is <br />applied and to check the validity of applying ET evaluation <br />across the priority areas. <br /> <br />1. Two complete weather stations have been installed - <br />one by the Extension Service Staff assigned to the Salinity <br />Project and the second one by the Experimental station at <br />Yellowjacket. Two ET stations have been installed by the <br />M&E team. Each of the ET stations consist of a Datapod 219, <br />an Atmometer, and a rain gauge. The ET stations measure <br />maximum and minimum temperatures plus solar radiation. This <br />data is then processed using the Jensen-Haise equation to <br />come up with ET. <br /> <br />2. Arrangements have been made with the local <br />newspaper to publish the ET data on a weekly basis. The <br />Extension Agent assigned to the SCS Salinity staff will <br />correlate the ET data gathered from the two complete weather <br />stations and provide that information to the newspaper. <br /> <br />E. EQUIPHE!IT: <br /> <br />Equipment was ordered based on the existing objective <br />of the program. Additional equipment will be ordered as <br />needed. The present equipment will measure the inflow and <br />outflow of open earthen ditches and the flow through closed <br />pipe systems. <br /> <br />1. Presently, on hand, enough equipment has been <br />ordered and received to outfit and install 5 sites. Partial <br />equipment is on hand for one other site. <br /> <br />2. All the equipment was procured by purchase orders <br />and local purchases. <br /> <br />3. An equipment inventory file has been set up to keep <br />track of all the equipment used by the M&E team. <br /> <br />4. Stilling wells, for potentiometers, were fabricated <br />in the field office, using 12" PVC pipe to keep cost down. <br /> <br />5. More modern computer equipment and updated software <br />have been ordered to do a better job of correlating the M&E <br />data and preparing more informative reports for 1992. ~ 4 (\ '. \) <br />(;I.:'l.~. <br />