Nizinski Georges auteur aut IRD Ziernicka-Wojtaszek A. auteur aut IRD Ksiazek L. auteur aut IRD Gawronski K. auteur aut IRD Montoroi Jean-Pierre auteur aut IRD Zaghloul A. auteur aut IRD Ali R. R. auteur aut IRD Saber M. auteur aut IRD text journalArticle eng text/pdf reformatted digital access Studies on soil-water management in the Nile Delta and Northern Sinai (Egypt) were carried out in 2011-2013 by the Institut de Recherche pour le Developpement. The El-Salam orange orchard was selected as a 'standard' station to study the management of appropriate irrigation, including the development of a model to assist in the management of irrigation of other crop covers in the Nile Delta. The model simulated actual evapotranspiration with a one-day step resolution, using the approach of Penman-Monteith (with daily input data, i.e. standard data from the national network of weather stations), by taking account of the specificity of the crop cover (cover resistance). We compared the amounts of irrigation applied to the orange orchard (I-mean = 994.3 mm.year(-1); 2.7 mm.day(-1); crop coefficient Ea/ET0 = 0.78) with the requirements of water estimated by the model (Ea(simulated)). This comparison enabled us to propose a daily amount required for irrigation. It is reasonable to sustain water losses of 94,570 m(3) water.year(-1) for the total area of the plantation (80 ha; drainage from the root zone), that is, 1,182 m(3) water.year(-1) . ha(-1). These water losses involve hydraulic adjustment of the sites of crop production and the costs of routing water. specialized irrigation Bowen ratio actual evapotranspiration orange orchard Nile Delta Egypt EGYPTE NILE DELTA SINAI 072 16 4 187-203 2017 1644-0765 https://www.documentation.ird.fr/hor/fdi:010072785 10.15576/asp.fc/2017.16.4.187 1644-0765 [F B010072785] https://www.documentation.ird.fr/hor/fdi:010072785 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers18-05/010072785.pdf IRD - Base Horizon / Pleins textes 2018-06-01 2018-06-05 fdi:010072785 fre