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NW Washington | I remember a professor once saying if you are going to irrigate you have to have drainage, especially in arid desert soils that are high in salts.
You sometimes have to over irrigate to keep the salts moving down in the profile or else they will come to the top and cause problems. And over irrigation means you need drainage, and then you also have some drainage water that is contaminated. The further downstream you live the worse it gets.
Management of arid desert soils under irrigation is a totally different ball game than soils in the humid corn-belt or other regions. | |
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Tile in new Mexico
