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<br />~f:fn <br /> <br />~ <br />\.-~i <br />~~ . <br />~ <br /> <br />TABLE 4 <br /> <br />GRAND VALLEY SALINITY PROJECT <br />SEVEN-YEAR SUMMARY OF IRRIGATION MONITORING DATA, 1985-1991 <br /> <br />Year Field No. of <br />size{ac) irrig. <br /> <br />1985 20 <br />1986 20 <br />1987 19 <br />1988 20 <br />1989 21 <br />1990 15 <br />1991 15 <br />Ave~aoe 19 <br /> <br />8 <br />7 <br />7 <br />9 <br />9 <br />8 <br />7 <br />8 <br /> <br />Inflow <br />(i n) <br /> <br />63.1 <br />55.3 <br />53.5 <br />55.4 <br />53.9 <br />61.3 <br />56.4 <br />57.0 <br /> <br />Outflow <br />(i n) <br /> <br />16.8 <br />19.1 <br />16,7 <br />14.1 <br />14,5 <br />18.6 <br />14,9 <br />16.4 <br /> <br />Inf i It. <br />(i n) <br /> <br />46.3 <br />36.3 <br />36.8 <br />41.3 <br />39.4 <br />42.7 <br />41.5 <br />40.6 <br /> <br />ETa <br />(i n) <br /> <br />24.2 <br />25.1 <br />27,1 <br />27.5 <br />28.2 <br />25.4 <br />26.7 <br />26.3 <br /> <br />D.P.1/ <br />(in) <br /> <br />27.7 <br />14.1 <br />13.0 <br />Iq.5 <br />11.5 <br />17.0 <br />15.9 <br />16.1 <br /> <br />Irrig.2/ <br />Eff i c . (X) <br /> <br />30 <br />40 <br />45 <br />50 <br />52 <br />42 <br />45 <br />43 <br /> <br />l/D.P. is ave~age deep pe~colation fo~ all su~face and sp~inkle~ i~~. sites <br />2/Pe~eent i~~ig. Effie. = (inflow - outflow - D,P. / inflow) x 100 <br /> <br />.(:)j;. <br /> <br />18 <br />