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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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TLDR
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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Soil water dynamics and water use efficiency in spring maize (Zea mays L.) fields subjected to different water management practices on the Loess Plateau, China.
Yi Liu,Yi Liu,Shiqing Li,Shiqing Li,Fang Chen,Shenjiao Yang,Shenjiao Yang,Xinping Chen,Xinping Chen +8 more
TL;DR: In this article, a 2-year field experiment was conducted at the Changwu agro-ecosystem research station to evaluate various water management practices for achieving favorable grain yield with high water use efficiency (WUE) of spring maize (Zea mays L).
Journal ArticleDOI
A consolidated evaluation of the FAO-56 dual crop coefficient approach using the lysimeter data in the North China Plain
Yujie Liu,Yi Luo +1 more
TL;DR: In this paper, the authors evaluated whether the dual crop coefficient (DCC) method was suitable for calculating the actual daily evapotranspiration of the main crops (winter wheat and summer maize) in the North China Plain (NCP).
Journal ArticleDOI
Silica nanoparticles boost growth and productivity of cucumber under water deficit and salinity stresses by balancing nutrients uptake.
Abdullah H. Al-Saeedi,Hassan El-Ramady,Tarek Alshaal,Tarek Alshaal,Mohamed El-Garawany,Nevien Elhawat,Awadh Al-Otaibi +6 more
TL;DR: The results revealed that SiNPs improved growth and productivity of cucumber regardless of quantity of supplied water; however, the greatest increase corresponded to irrigating cucumber at the rate of 85% of ETc, which could be referred to high silicon content found in leaf which regulates water losses via transpiration.
Journal ArticleDOI
Agroclimatic constraints for rainfed agriculture in the Bolivian Altiplano
TL;DR: In this paper, a downward trend from North to South was observed in temperature, the onset and the duration of the rainy season, indicating that climate-wise crop production is only possible during 5 months in the north and less than 4 months in south.
Journal ArticleDOI
Analysis of potential evapotranspiration using 11 modified temperature-based models
Mohammad Valipour,Saeid Eslamian +1 more
TL;DR: In this paper, the evapotranspiration was estimated using 11 temperature-based models and was compared with the FAO Penman-Monteith model in the most provinces of Iran.
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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