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<br />page 6 <br /> <br />",,, <br /> <br />-~ <br />v~ <br />,-'-1 <br />.-1 <br /> <br />IRRIGATION SCHEDULING <br /> <br />, <br />'.- <br /> <br />AND <br /> <br />" <br /> <br />c'" <br /> <br />TILE DRAINAGE <br /> <br />~ect Objectives <br />1. To demonstrate that irrigation soheduling will <br /> <br />(a) improve the mineral quality of the Colorado <br /> <br />River, (b) increase water use efficiency on the <br /> <br />farm, and (c) result in increased crop yields. <br /> <br />2. To. demonstrate that tile drainage will (a) im- <br /> <br />prove the mineral quality of the Colorado River <br /> <br />and (b) effectively reclaim lands of low <br /> <br />agricultural productivity resulting from high <br /> <br />\ <br /> <br />groundwater levels. <br /> <br />3. <br /> <br />To conduct a National Conference in Grand Valley <br /> <br />on "Managing Irrigated Agriculture to Improve <br /> <br />Water Quality." <br /> <br />Plan of Operation--The principal study area in Grand Valley <br />used for demonstrating the effectiveness of canal and <br />lateral lining will also be used to demonstrate irrigation <br />scheduling and tile drainage. At least two farms will be <br />selected near the Colorado River for demonstrating tile <br />drainage, as well as irrigation scheduling. The farms <br />previously used for studying irrigation efficiency will <br />also be used as part of the irrigation scheduling demon- <br />stration, along with other farms in the study area. The <br />accompanying figure shows the six farms that have been <br />studied during the 1972 irrigation season. Irrigation <br /> <br />. <br />