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<br />Table 1. <br /> <br />Estln,ated Cost of Alternative Methods for Reduclng On-Farm Salt Discharges ($ Per Ton of Salt Per <br />Year). a <br /> <br />Earthen <br />Ditch, <br />Short Lined <br /> <br />Lined <br />Ditch, <br />Short Gated <br /> <br />Gated <br />Pipe, <br />Manual Ported <br />Cutback Ditch <br /> <br />Crop <br /> <br />Sets <br /> <br />Ditch <br /> <br />Sets <br /> <br />Pipe <br /> <br />Ported <br />Ditch, <br />Manual <br />Cutback <br /> <br />Seml- <br />Automated <br /> <br />Land <br />Retirement <br /> <br />Ported <br />Ditch <br /> <br />Cab le- <br />gation <br /> <br />(Individual <br />Crop) <br /> <br /> (s> ($) ($) ($) (S) (S) ($) (S> (S) ($) <br />Alfalfa 15.30 32.20 22.80 13.40 10.50 53.60 27.50 22.30 1.20 10.30 <br />Barley 5.90 32.50 12.50 14.70 5.50 55.00 16.40 13.80 2.10 (.50) <br />Corn 7.80 31.10 13.10 11.50 6.20 51.40 10.80 1.60 0.70 18.30 <br />Pasture 8.80 32.20 15.80 13.40 5.90 53.60 20.00 16.20 0.90 01.20> <br />Pinto Bean 5.90 32.50 12.50 14.10 5.50 55.00 16.40 13.80 2.10 26.70 <br /> <br />a Costs are expressed In 1982 dollars and assume an llJ Interest rate, the Inclusion of a burled pipe on-farm <br />conveyance system, a 20 year life for Irrigation systems and 25 years for the conveyance system, and 5 tons of <br />salt contained in an acre-foot of deep percolation or ditch seepage. <br /> <br />. <br /> <br />4428 <br />