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<br />- . <br /> <br />N <br />..c.. <br />to <br />-..J <br /> <br />saline water from the powerplant is about ten times saltier <br /> <br />than the normal "creek" irrigation water. Results to date <br /> <br />show that the build-up of total salts was sufficient to cause <br /> <br />some yield depressions and a major detrimental effect to <br />orchards from boron toxicity. <br /> <br />Monitoring and Evaluation <br />The objectives of the monitoring and evaluation (M&E) <br /> <br />program are to: <br /> <br />1) develop information about actual onfarm <br /> <br />effects, 2) enable USDA to confirm or correct data used to <br /> <br />plan salinity control projects, and 3) collect data to <br />evaluate the overall effectiveness and efficiency of USDA <br />salinity control activities. <br /> <br />Although hampered by a shortage of staff and funding, <br /> <br />USDA moved ahead during 1985. <br /> <br />In the Grand Valley unit, <br /> <br />Colorado, 16 automated irrigation M&E sites are now <br /> <br />operational, and full-season irrigation data have been <br /> <br />collected on 13 fields. <br /> <br />Development of the software to <br /> <br />process M&E data proved to be a much larger task than <br /> <br />initially estimated, but significant progress was made in <br /> <br />1985 toward developing needed software. <br /> <br />In the uinta Basin Unit, ground water tubes were <br /> <br />installed on 15 farms to facilitate monitoring ground water <br /> <br />levels using neutron probes. <br /> <br />Water inflow and outflow <br /> <br />measurements on these farms will be combined with data from <br /> <br />six potential evapotranspiration sites to measure deep <br /> <br />percolation. <br /> <br />-21- <br />