from the masts was cut into 2-m sections and the dye was (1978), Akesson and Yates (1974, p. 92-98), Riley and extracted from 2-m sections of the string using 10 mL of Wiesner (1989), Richardson et al. (1995), and the U.S.isopropanol solvent. Dye concentration was measured using

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A simple technique to determine evaporation and seepage losses of agricultural water storages is described. Evaporation is calculated from Automatic Weather Station (AWS) variables using the Penman-Monteith equation, and seepage is determined as the difference between this and accurate water depth measurements made using a Pressure Sensitive Transducer (PST

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