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evapotranspiration |
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evapotranspirationLoss of water from the soil both by evaporation from the soil surface and by transpiration from the leaves of the plants growing on it. Factors that affect the rate of evapotranspiration include the amount of solar radiation, atmospheric vapor pressure, temperature, wind, and soil moisture. Evapotranspiration accounts for most of the water lost from the soil during the growth of a crop. Estimation of evapotranspiration rates is thus important in planning irrigation schemes. evapotranspiration [i‚vap·ō‚tranz·pə′rā·shən] (hydrology) Discharge of water from the earth's surface to the atmosphere by evaporation from lakes, streams, and soil surfaces and by transpiration from plants. Also known as fly-off; total evaporation; water loss. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| amp;ldquo;Reducing plant water loss, or evapotranspiration, is one thing we look at in drought tolerance,” he says, “but we consider the whole plant from the roots up. The amount of surface heating is reduced over wet surfaces and locations with active vegetation and adequate root zone moisture; and surface heating increases with drier surfaces where surface evaporation and evapotranspiration from vegetation is limited. Rainfall or evapotranspiration also show a correlation with intermediate host snail populations. |
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