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Crop evapotranspiration : guidelines for computing crop water requirements
Richard G. Allen,Luis S. Pereira,Dirk Raes,Martin Smith +3 more
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In this paper, an updated procedure for calculating reference and crop evapotranspiration from meteorological data and crop coefficients is presented, based on the FAO Penman-Monteith method.Abstract:
(First edition: 1998, this reprint: 2004). 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 organised 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.read more
Citations
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Spatiotemporal characteristics of reference evapotranspiration during 1961-2009 and its projected changes during 2011-2099 on the Loess Plateau of China
Zhi Li,Fenli Zheng,Wenzhao Liu +2 more
TL;DR: In this article, the present and future spatiotemporal characteristics of reference evapotranspiration (ET0) are examined in the Loess Plateau using the Penman-Monteith method with historical weather data.
Journal ArticleDOI
The MONICA model: Testing predictability for crop growth, soil moisture and nitrogen dynamics
Claas Nendel,M. Berg,Kurt Christian Kersebaum,Wilfried Mirschel,Xenia Specka,Martin Wegehenkel,Karl-Otto Wenkel,Ralf Wieland +7 more
TL;DR: Based on the convincing performance of the model under uncalibrated conditions, MONICA can be regarded as a suitable simulation model for use in regional applications and its ability to reproduce the observed crop growth results in free-air carbon enrichment experiments makes it suited to predict agro-ecosystem behaviour under expected future climate conditions.
Journal ArticleDOI
Dynamics of reference evapotranspiration in the Bolivian highlands (Altiplano)
TL;DR: In this article, the FAO Penman-Monteith equation was used to estimate the reference evapotranspiration in the Bolivian Altiplano during the growing period (October-April).
Journal ArticleDOI
Deficit irrigation in maize for reducing agricultural water use in a Mediterranean environment
Imma Farré,J.-M. Faci +1 more
TL;DR: In this article, two field experiments were conducted on a loam soil in northeast Spain to characterize the response of maize (Zea mays L.) to deficit irrigation under surface irrigation, which consisted of all possible combinations of full irrigation or limited irrigation in the three phases.
Journal ArticleDOI
Combining the simulation crop model AquaCrop with an economic model for the optimization of irrigation management at farm level
TL;DR: In this paper, a model at farm scale was developed and applied to an area in Southwestern Spain to assist farmers in pre-season decision making on cropping patterns and on irrigation strategies.
References
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Journal ArticleDOI
Natural evaporation from open water, bare soil and grass
TL;DR: It is shown that a satisfactory account can be given of open water evaporation at four widely spaced sites in America and Europe, the results for bare soil receive a reasonable check in India, and application of theresults for turf shows good agreement with estimates of evapolation from catchment areas in the British Isles.
Journal ArticleDOI
On the Assessment of Surface Heat Flux and Evaporation Using Large-Scale Parameters
C. H. B. Priestley,R. J. Taylor +1 more
TL;DR: In this article, the large-scale parameterization of the surface fluxes of sensible and latent heat is properly expressed in terms of energetic considerations over land while formulas of the bulk aerodynamic type are most suitahle over the sea.
Book
Water quality for agriculture
R. S. Ayers,D. W. Westcot +1 more
TL;DR: Water quality for agriculture, water quality in agriculture for agriculture as mentioned in this paper, water quality of agriculture, Water quality of water for agriculture in agriculture, مرکز فناوری اطلاعات و اسلاز رسانی
Journal ArticleDOI
The Interpretation of the Variations in Leaf Water Potential and Stomatal Conductance Found in Canopies in the Field
TL;DR: In this paper, the stomatal conductance of illuminated leaves is a function of current levels of temperature, vapour pressure deficit, leaf water potential (really turgor pressure) and ambient CO $_2$ concentration and when plotted against any one of these variables a scatter diagram results.
Book ChapterDOI
Yield response to water
TL;DR: In this paper, a methodology to quantify yield response to water through aggregate components which form the "handles" to assess crop yields under both adequate and limited water supply is presented, which takes into account maximum and actual crop yields as influenced by water deficits using yield response functions relating relative yield decrease and evapotranspiration deficits.
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