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Crop evapotranspiration : guidelines for computing crop water requirements

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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.

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Citations
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Water relations and gas exchange in olive trees under regulated deficit irrigation and partial rootzone drying

TL;DR: In this paper, the authors compared the response of mature Manzanilla olive trees to a PRD and an RDI treatment in which about 50% of the crop evapotranspiration (ETc) was supplied daily by localised irrigation.
Journal ArticleDOI

Crop coefficients and water-use estimates for sugarcane based on long-term Bowen ratio energy balance measurements

TL;DR: In this article, the Bowen ratio energy balance (BREB) system was installed in the Burdekin district, Australia and in Swaziland to determine daily ET from well-irrigated sugarcane crops.
Journal ArticleDOI

The effect of rice straw mulch on evapotranspiration, transpiration and soil evaporation of irrigated wheat in Punjab, India

TL;DR: In this article, the effects of rice straw mulch on components of the water balance of irrigated wheat were conducted during 2006-2007 and 2007-2008 in Punjab, India, on a clay loam soil.
Journal ArticleDOI

Field evaluation of a multicomponent solute transport model in soils irrigated with saline waters

TL;DR: The HYDRUS-1D software package was used to simulate water movement and solute transport in two complex experiments carried out under field conditions in Alvalade and Mitra, Portugal.
Journal ArticleDOI

Treated municipal wastewater reuse in vegetable production

TL;DR: In this article, the results of a reuse scenario where tertiary-treated municipal wastewater was supplied for vegetable crop irrigation (i.e., eggplant and tomato crops) in Eastern Sicily (Italy).
References
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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

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, +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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