1. World Vegetable Center, West and Central Africa—Dry Region, CIFOR-CNSRT, Ouagadougu 06 BP 9478, Burkina Faso
2. World Vegetable Center, West and Central Africa—Coastal and Humid Region, Council for Scientific and Industrial Research Campus (CSIR), Kwadaso-Agric College, Kumasi P.O. Box 3785, Ghana
3. Department of Agriculture Engineering, Kwame Nkrumah University of Science and Technology, Kumasi AK-385-1973, Ghana
4. International Institute of Tropical Agriculture (IITA), Dar es Salaam 34441, Tanzania
5. International Institute of Tropical Agriculture (IITA), Bamako 91094, Mali
6. International Institute of Tropical Agriculture (IITA-Benin), Cotonou 08-01000, Benin
7. World Vegetable Center, East and Southeast Asia, P.O. Box 1010, Bangkok 10903, Thailand
8. World Vegetable Center, West and Central Africa (WCA)—Coastal and Humid Regions, IITA-Benin Campus, Cotonou 08 BP 0932, Benin