Apple Orchard Irrigation by Trickle and Sprinkler

Abstract
DELICIOUS apples were grown from planting for 4 yr with daily trickle irrigation after the 1st year with 272 cm less water applied than applied to daily sprinkler-irrigated trees and 186 cm less than applications to 2-wk sprinkled trees. Trickle-irrigated trees produced fruit earlier and made equal growth. Irrigations were scheduled from lysimeters, evaporation and gravi-metric sampling.

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