Transcription of Crop evapotranspiration - Guidelines for computing crop ...
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Crop evapotranspiration - Guidelines for computing crop water requirements - FAO Irrigation and drainage paper 56. By Richard G. Allen Utah State University Logan, Utah, USA. Luis S. Pereira Instituto Superior de Agronomia Lisbon, Portugal Dirk Raes Katholieke Universiteit Leuven Leuven, Belgium Martin Smith water Resources, Development and Management Service FAO. FAO - Food and Agriculture Organization of the United Nations Rome, 1998. The designations employed and the presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.
The irrigation water requirement also includes additional water for leaching of salts and to compensate for non-uniformity of water application. Energy balance The energy arriving at the surface must equal the energy leaving the surface for the same time period. All fluxes of energy should be considered when deriving an energy balance equation.
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