Ogita, Shinjiro, Prefectural University of Hiroshima, Shobara, Japan (Japan)
Ogu, Gideon Ikechukwu, Federal University Lokoja (Nigeria)
Okantah, Derick (Ghana)
Okolo, Judith Chukwuebinim, Department of Environmental Biotechnology and Bio-conservation, National Biotechnology Development Agency, Abuja, Nigeria. (Nigeria)
Oladejo, Afolabi Ola, Federal College of Forestry Jos, Plateau State Nigeria. (Nigeria)
Omotesho, Olubunmi Abayomi, Department of Agricultural Economics and Farm Management, University of Ilorin, Kwara State, Nigeria (Nigeria)
Onabanjo, Oluseye Olusegun, Federal University of Agriculture, Abeokuta (Nigeria)
Onuwa, Godfrey, Federal College of Forestry Jos, Plateau State Nigeria. (Nigeria)
Osei-Nyarko, Joash (Ghana)
Ouertani, Emna, Higher School of Agriculture, Mograne (ESAM) Rural Economics Laboratory, National Agronomic Research Institute of Tunisia (INRAT) University of Carthage, Tunis, Tunisia (Tunisia)