1. Department of Agronomy; National School of Agriculture of Meknès; km. 10, Route Haj Kaddour B.P. S/40, 50001 Meknès Morocco
2. Texas A&M AgriLife Research; Blackland Research and Extension Center; 720 E. Blackland Road 76502 Temple TX USA
3. United State Department of Agriculture; Agricultural Research Service; 808 E. Blackland Road 76502 Temple TX USA
4. Water Research Institute; National Research Council; 5 Viale F. De Blasio 70132 Bari Italy