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<br />(.,:) <br />......J' <br />"~ <br />-i <br /> <br />-, <br /> <br />,.... <br />,-.' <br /> <br />The purpose of this report is to provide <br />some experience for those who would improve on- <br />farm irrigation systems in order to reduce deep <br />percolation and the resultant increase of salt <br />in the Colorado River. <br /> <br />We are indebted to our on-farm cooperators-- <br />George Zimmerman, Robert Davis, Roy Hood and <br />Gilbert Thompson for their advice and cooperation <br />in this undertaking. <br /> <br />These studies were initiated under Technical <br />Assistance Grant FCRC No. 232-399-031 with the Four <br />Corners Regional Commission in October, 1972:. <br />