TY - CHAP A1 - Salah El-Hendawy A2 - Mohamed Alboghdady A3 - Jun-Ichi Sakagami A4 - Urs Schmidhalter ED1 - Giacomo Gerosa Y1 - 2011-11-09 PY - 2011 T1 - Saving Water in Arid and Semi-Arid Countries as a Result of Optimising Crop Evapotranspiration N2 - This book represents an overview of the direct measurement techniques of evapotranspiration with related applications to the water use optimization in the agricultural practice and to the ecosystems study. Different measuring techniques at leaf level (porometry), plant-level (sap-flow, lysimetry) and agro-ecosystem level (Surface Renewal, Eddy Covariance, Multi layer BREB), are presented with detailed explanations and examples. For the optimization of the water use in agriculture, detailed measurements on transpiration demands of crops and different cultivars, as well as results of different irrigation schemes and techniques (i.e. subsurface drip) in semi-arid areas for open-field, greenhouse and potted grown plants are presented. Aspects on ET of crops in saline environments, effects of ET on groundwater quality in xeric environments as well as the application of ET to climatic classification are also depicted. The book provides an excellent overview for both, researchers and student,s who intend to address these issues. BT - Evapotranspiration SP - Ch. 12 UR - https://doi.org/10.5772/18041 DO - 10.5772/18041 SN - PB - IntechOpen CY - Rijeka Y2 - 2022-05-20 ER -