Prof. Mohammed Osman Khider, Department of Agronomy, Faculty of Agriculture, University of Khartoum.

Dr. Abdelwahab Hassan Abdellah, Department of Agronomy, Faculty of Agriculture, University of Khartoum.

Dr. Awadella Abdellah Abdelelmoula, Department of Agronomy, Faculty of Agriculture, University of Khartoum.