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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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Deficit irrigation in grapevine improves water‐use efficiency while controlling vigour and production quality
Maria Manuela Chaves,Tiago P. Santos,C.R. Souza,María Fernanda Ortuño,M. L. Rodrigues,Carlos M. Lopes,João Maroco,João Pereira +7 more
TL;DR: It is shown that the amount of water applied by 50% in relation to full crop's evapotranspiration (ETc) (full irrigated (FI) vines) with no negative effects on production and even get some gains of quality (in the case of PRD), and growth inhibition in PRD was not a result of a hydraulic control.
Journal ArticleDOI
LISFLOOD: a GIS-based distributed model for river basin scale water balance and flood simulation
TL;DR: The spatially distributed LISFLOOD model is described, which is a hydrological model specifically developed for the simulation ofhydrological processes in large European river basins, and how the model is parameterized is discussed.
Journal ArticleDOI
Water relations in sugarcane and response to water deficits
N. G. Inman-Bamber,D.M. Smith +1 more
TL;DR: In this article, the authors assess where knowledge of sugarcane water relations must be strengthened in order for progress to be made in irrigation management and genetic improvement and general management response to climate as well as plant and soil resources.
Journal ArticleDOI
Using the FAO-56 dual crop coefficient method over an irrigated region as part of an evapotranspiration intercomparison study.
TL;DR: In this paper, the authors used the FAO-56 "dual" crop coefficient approach that includes separate prediction of evaporation from soil, and the predictions were within 20% of predictions by the Landsatbased SEBAL remote sensing method at only one site and date.
Journal ArticleDOI
The global component of freshwater demand and supply: an assessment of virtual water flows between nations as a result of trade in agricultural and industrial products
TL;DR: In this article, the authors show that it becomes increasingly important to put freshwater issues in a global context and that increasing globalization of trade, global water interdependencies and overseas externalities are likely to increase.
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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