about half the irrigated acres in the 17 Western states use pressure (sprinkler and drip/trickle) systems, which are genrally more efficient than traditional gravity-fed systems, but this percentage varies by state
about half the irrigated acres in the 17 Western states use pressure (sprinkler and drip/trickle) systems, which are genrally more efficient than traditional gravity-fed systems, but this percentage varies by state
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