Tarig E. Mahmoud

Department of Agricultural Economics and Rural Development, Faculty of Natural Resources and Environmental Studies, University of Kordofan, Elobeid, Sudan

Maruod E. Maruod

Department of Forestry Management, Faculty of Forestry, University of Khartoum, Sudan

Manal A. Khiery

Department of Crop Sciences, Faculty of Natural Resources and Environmental Studies, University of Kordofan, Elobeid, Sudan

Ahmed M. El Naim

Department of Crop Sciences, Faculty of Natural Resources and Environmental Studies, University of Kordofan, Elobeid, Sudan

Moayad B. Zaied

Department of Crop Sciences, Faculty of Natural Resources and Environmental Studies, University of Kordofan, Elobeid, Sudan