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<br /> <br />I'\') <br />0) <br />pot. <br />..... <br /> <br />3. Salts generally accumulate in the soil surface during the <br /> <br />period of crop maturation when water is not being applied or <br /> <br />in hills during conventional furrow irrigation. Leaching to <br /> <br />.. <br /> <br />move salts down and reduce soil salinity in the root zone is <br /> <br />necessary before planting the next crop~ <br /> <br />4. For leaching to 'be effective, a good,drainage system must <br /> <br /> <br />be provided'. TUe drains generally increase the efficiency of <br /> <br />water removal. Necessary drainage for maintaining a salt bal- <br /> <br />ance could also be considered an economic detriment. <br /> <br />S. Special bedding practices such as double-row beds or slop- <br /> <br /> <br />ing beds can achieve better salinity control by affecting the <br /> <br /> <br />location of the salt buildup during the cropping period in <br /> <br />relation to plant placement. <br /> <br />6. A significant advantage of sprinkler irrigation over fur- <br /> <br /> <br />row or flood irrigation is the movement and buildup of salt <br /> <br />in the surface layers of the soil. sprinkler irrigation elim- <br /> <br />inates salt accumulation in conventional furrow irrigation <br /> <br />beds and results in more efficient salt removal and lower <br /> <br />root zone salinities than with flood irrigation. <br /> <br />12 <br />