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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
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Updated high‐resolution grids of monthly climatic observations – the CRU TS3.10 Dataset
TL;DR: In this paper, an updated gridded climate dataset (referred to as CRU TS3.10) from monthly observations at meteorological stations across the world's land areas is presented.
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A Multiscalar Drought Index Sensitive to Global Warming: The Standardized Precipitation Evapotranspiration Index
TL;DR: In this article, a new climatic drought index, the standardized precipitation evapotranspiration index (SPEI), is proposed, which combines multiscalar character with the capacity to include the effects of temperature variability on drought assessment.
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The DSSAT cropping system model
James W. Jones,Gerrit Hoogenboom,Cheryl H. Porter,Kenneth J. Boote,William D. Batchelor,L. A. Hunt,Paul W. Wilkens,Upendra Singh,Arjan J. Gijsman,Joe T. Ritchie +9 more
TL;DR: The benefits of the new, re-designed DSSAT-CSM will provide considerable opportunities to its developers and others in the scientific community for greater cooperation in interdisciplinary research and in the application of knowledge to solve problems at field, farm, and higher levels.
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The use of ‘altitude’ in ecological research
TL;DR: There are two categories of environmental changes with altitude: those physically tied to meters above sea level, such as atmospheric pressure, temperature and clear-sky turbidity; and those that are not generally altitude specific, suchAs moisture, hours of sunshine, wind, season length, geology and even human land use.
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Improved allometric models to estimate the aboveground biomass of tropical trees
Jérôme Chave,Maxime Réjou-Méchain,Alberto Búrquez,E. N. Chidumayo,Matthew S. Colgan,Welington Braz Carvalho Delitti,Alvaro Duque,Tron Eid,Philip M. Fearnside,Rosa C. Goodman,Matieu Henry,Angelina Martínez-Yrízar,Wilson A. Mugasha,Helene C. Muller-Landau,Maurizio Mencuccini,Bruce Walker Nelson,Alfred Ngomanda,Euler Melo Nogueira,Edgar Ortiz-Malavassi,Raphaël Pélissier,Pierre Ploton,Casey M. Ryan,Juan Saldarriaga,Ghislain Vieilledent +23 more
TL;DR: This work analyzed a global database of directly harvested trees at 58 sites, spanning a wide range of climatic conditions and vegetation types, and found a pantropical model incorporating wood density, trunk diameter, and the variable E outperformed previously published models without height.
References
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Agrometeorological crop monitoring and forecasting.
M. Frere,G. F. Popov +1 more
TL;DR: In this paper, the authors present a simple rainfall monitoring based on departures from "normal" rainfall evolved into an assessment of the cumulative water balance of crops and a short note was printed and widely distributed (Frere and Popov, 1976).
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Crop‐Water Production Function Model for Saline Irrigation Waters
Journal ArticleDOI
Simulated crop water production functions for several crops when irrigated with saline waters
J. Letey,Ariel Dinar +1 more
TL;DR: In this paper, a model was developed to compute crop water production functions by combining three relationships: yield and evapotranspiration, yield and average root-zone salinity.
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Influence of soil water stress on evaporation, root absorption, and internal water status of cotton.
Wayne R. Jordan,Joe T. Ritchie +1 more
TL;DR: Diurnal variations in leaf water potential, diffusion resistance, relative water content, stem diameter, leaf temperature, and energy balance components were measured in cotton during drought stress under field conditions to discuss possible implications of high soil water stress in relation to stomatal function and growth.
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Surface Resistance of Crop Canopies
G. Szeicz,I. F. Long +1 more
TL;DR: In this paper, three analytic and two emperic methods are described to calculate the surface resistance rs of crops transpiring at a measured rate, which is applicable when detailed temperature, humidity, and wind profiles are measured; for the residual method, measurements of surface temperature, wind, and humidity are enough; the calculation is based on the ratio of potential to actual evaporation.
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