1. Private Mail Bag, Academy Post Office, CSIR-Soil Research Institute, Kwadaso, Ghana
2. Faculty of Natural Sciences and Environmental Management, CSIR-College of Science and Technology, Academy Post Office, Kwadaso, Ghana
3. Soil, Water, Agronomy (SWA) Program, International Center for Agricultural Research in the Dry Areas (ICARDA), Rabat, Morocco
4. Sustainable Productivity Enhancement Program, Africa Rice Center (AfricaRice), Bouaké, Cote d’Ivoire