Evapotranspirometer An instrument designed to measure Evapotranspiration as related to a particular place, soil type, and vegetation. The device consists of a block of soil with some planted vegetation enclosed in a container. Evapotranspiration is determined by maintaining a Water Budget for the container, that is, accounting for the water applied, water drained off the bottom, and the change in the moisture content of the soil. If there is a provision for drainage of the soil water, the device is referred to as a Lysimeter.
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Author of the Water Words Dictionary source of text: Gary A. Horton
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