Crop evapotranspiration: guidelines for computing crop water requirements
Available online: http://www.fao.org/docrep/X0490E/X0490E00.htm
Richard G. Allen ; Luis S. Pereira ; Dirk Raes ; Martin Smith ; Food and Agriculture Organization (Rome, Italia)
Published by: FAO ; 1998
This publication presents an updated procedure for calculating reference and crop evapotranspiration from meteorological data and crop coefficients. The procedure, first presented in FAO Irrigation and Drainage Paper No. 24, Crop water requirements, in 1977, allows estimation of the amount of water used by a crop, taking into account the effect of the climate and the crop characteristics. The publication incorporates advances in research and more accurate procedures for determining crop water use as recommended by a panel of high-level experts organized by FAO in May 1990. The first part of the guidelines includes procedures for determining reference crop evapotranspiration according to the FAO Penman-Monteith method. These are followed by updated procedures for estimating the evapotranspiration of different crops for different growth stages and ecological conditions.
Collection(s) and Series: FAO irrigation and drainage paper- No. 56
Language(s): English; Other Languages: Spanish
Format: Digital (Free) (ill.)Tags: Water ; Irrigation ; Agriculture 
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