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abstract In this study, the performance of three empirical methods for estimating reference evapotranspiration (ET 0): Makkink (Mak) and PriestleyeTaylor (PT) (radiation-based) and HargreaveseSamani (HARG) (temperature-based) were assessed in semi-arid regions. The values of ET 0 derived using these three methods were compared to those estimated using the(More)
1. Introduction Within the arid and semi-arid regions, water availability is a major limitation for crop production. The Haouz plain that surrounds the city of Marrakech (Center of Morocco) is classified among regions with scarce water resources (Pascon, 1977). In recent years, due to the combined effect of drought and the increase of irrigated surfaces,(More)
Recent efforts have been concentrated in the development of models to understand and predict the impact of environmental changes on hydrological cycle and water resources in arid and semi-arid regions. In this context, remote sensing data have been widely used to initialize, to force or to control the simulations of these models. However, for several(More)
The rationale of this research is to investigate approaches based on modelling and remote sensing data for estimating the spatial distribution of yield and irrigation of wheat in semi-arid areas. The specific objective is to compare the performances of two approaches to test the STICS crop model using remotely sensed estimates of Leaf Area Index (LAI). An(More)
The aim of this study was to combine the FAO-56 dual approach and remotely-sensed data for mapping water use (ET c) in irrigated wheat crops of a semi-arid region. The method is based on the relationships established between Normalized Difference Vegetation Index (NDVI) and crop biophysical variables such as basal crop coefficient, cover fraction and soil(More)
The aim of this study was to use the FAO-56 single and dual crop coefficient approaches to estimate actual evapotranspiration (ET a) over an irrigated citrus orchard under drip and flood irrigations in Marrakech, Morocco. The results showed that, by using crop coefficients suggested in the FAO-56 paper, the performance of both approaches was poor for two(More)
† Those authors are also members of the LMI TREMA laboratory. Abstract: This paper describes the setting and results of a real-time experiment of irrigation scheduling by a time series of optical satellite images under real conditions, which was carried out on durum wheat in the Haouz plain (Marrakech, Morocco), during the 2012/13 agricultural season. For(More)
1. Problématique : La détection du stress hydrique d'un couvert végétal peut être faite à l'aide de la télédétection dans le domaine de l'Infra-Rouge-Thermique (IRT). La différence entre la température de surface d'un couvert végétal et la température de l'air fournit un bon indicateur de l'état hydrique du couvert. 2. Données de base et méthodologie : Dans(More)
Please address all the numbered queries on this page which are clearly identified on the proof for your convenience. Thank you for your cooperation _A_371173 1 Is this Equation 9? 2 Allen et al. not in refs list, please give details. 3 Please cross-reference the text without the use of section numbers! 4 Please update reference if possible. Abstract The(More)