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<br />C/O <br />00 <br />(T';:' <br />...... <br /> <br />TABLE HlJ <br /> <br />GRAND VALLEY SALINITY PROJErj <br />ACTUAL DEEP PERCOLATION AND <br />SALT LOAD REDUCTION FROM SURGE SITES <br /> <br />,...., <br />'- <br /> <br /> Far-m <br />S i te*31 <br />11 conv. <br />39 sur-ge <br />15 conv. <br />41 sur-ge <br />43 conv. 41 <br />44 sur-ge <br />45 conv. <br />46 sur-ge <br /> <br />Acr-e <br /> <br />Deep Per-c. <br />iniac <br /> <br />Salt Tons2/ Salt Tons <br />lac in lac <br />0.280 2.88 <br />0.280 0.39 <br /> 2.49 <br />0.263 4.87 <br />0.263 2.37 <br /> 2.50 <br />0.341 9.82 <br />0.341 3.78 <br /> 6.04 <br />0.341 5.59 <br />0.341 3.78 <br /> 1. 81 <br /> 5.79 <br /> 2.58 <br /> 3.21 <br /> 55.44 <br /> <br />4.3 <br />7.5 <br />Differ-ence <br /> <br />18.9 <br />16.6 <br />Differ-ence <br /> <br />2.4 <br />4.8 <br />Differ-ence <br /> <br />5.6 <br />11.3 <br />Differ-ence <br /> <br />Conventional Aver-age <br />Sur-ge Aver-age <br />Differ-ence <br />% Reduction with sur-ge <br /> <br />Salt Load Reduction <br /> <br />10.3 <br />1.4 <br />8.9 <br /> <br />18.5 <br />9.0 <br />9.5 <br /> <br />28.8 <br />11. 1 <br />17.7 <br /> <br />16.4 <br />11. 1 <br />5.3 <br /> <br />18.5 <br />8.2 <br />10.3 <br />55.6 <br /> <br />II Deep percolation in acre inches per acre. <br />2/ Based on the Grand Valley hydrosalinity model. <br />3/ All comparison sites (surge and conventional) established in the same field but different locations. <br />4/ Data from five irrigation events used for comparison. During the season, conventional site had six irrigations, <br />surge had five irrigations. <br /> <br />31 <br />