Mattar, Mohamed A., Prince Sultan Research Institute, King Saud University. Prince Sultan International Prize for Water Research Chair (PSIPW), King Saud University. Agricultural Engineering Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451. Saudi Arabia. Agricultural Engineering Research Institute (AEnRI), Agricultural Research Center, P.O. Box 256, Giza, Egypt., Saudi Arabia