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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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Simulation of global crop production with the ecosystem model DayCent
TL;DR: In this article, the authors adapted the agro-ecosystem model DayCent for the simulation of major crops at the global scale, based on a global compilation of environmental and management data and an algorithm to calculate global planting dates.
Journal ArticleDOI
Sustainable Water Management in Agriculture under Climate Change
TL;DR: In this article, sustainable water management in agriculture, which has a multi-functional role in Southern Europe, can be achieved by adopting improvements in irrigation application, soil and plant practices, water pricing, reuse of treated wastewater, farmers participation in water management and capacity building.
Journal ArticleDOI
Prediction Accuracy for Projectwide Evapotranspiration Using Crop Coefficients and Reference Evapotranspiration
TL;DR: In this article, the authors used the FAO-56 dual crop coefficient approach to calculate the reference evapotranspiration sKc ET0d procedure integrated over the Imperial Irrigation District.
Journal ArticleDOI
On the assessment of aridity with changes in atmospheric CO2
TL;DR: In this paper, the authors reexamine the same climate model output and conclude that warmer is less arid from all perspectives and in agreement with the geological records, which is not directly related to the water lost but rather to the carbon gain and is equated with reduction in photosynthetic uptake of CO2.
Journal ArticleDOI
Evaporative climate changes at Bet Dagan, Israel, 1964–1998
TL;DR: The view that the widespread reductions in potential evaporation that have been reported, although not found at Bet Dagan, were caused by global dimming rather than an increase in the rate of atmospheric moisture cycling due to global warming is supported.
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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