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<br />t.... <br />C'., <br />":'>J <br />....-! <br /> <br />.::"'...' <br />~-', <br />~....-' <br /> <br />j --- <br /> <br />page 9 <br /> <br />IRRIGATION PRACTICES, <br />RETURN FLOW SALINITY, <br /> <br />AND CROP YIELDS <br /> <br />~ect Objectives: <br />a. Evaluaea tha aff@oeg of variou! irrigation <br /> <br />practices on the amount and chemical quality <br /> <br />of return flows. <br /> <br />b. Evaluate the effects of various irrigation <br /> <br />practices on crop yields and fertilizer <br /> <br />requirements. <br /> <br />c. Demonstrate that improved farm management of <br /> <br />irrigation water can reduce the mineral content <br /> <br />of return flows. <br /> <br />d. Demonstrate that improving the chemical quality <br />of irrigation return flows through better farm <br /> <br />irrigation practices is profitable due to in- <br /> <br />creased crop yields and reduced fertilizer <br /> <br />expense. <br /> <br />e. Provide a better understanding of the manner in <br />which water quality degradation takes place as <br />a result of irrigation. <br />f. DeveLop recommendations regarding irrigation <br />systems, methods, and practices which will <br />minimize the chemical quality of return flows <br /> <br />. <br /> <br />while maintaining a CJood crop envIronment and <br /> <br />maximum bene fi ts from the conn UlI!,ed 'Ii'ater, <br /> <br />g. Develop procedures for projecting the findings <br /> <br />. <br /> <br />of this study to basinwide evaluations. <br />