1. CABI, Delémont, Switzerland
2. Haramaya University, Dire Dawa, Ethiopia
3. The Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania
4. Tanzanian Forestry Research Institute, Lushoto, Tanzania
5. Land Resource Management and Agricultural Technology (LARMAT), University of Nairobi, Nairobi, Kenya
6. CABI, Nairobi, Kenya
7. Werer Agricultural Research Center, Afar Region, Ethiopia
8. Tanzanian Forestry Research Institute, Moshi, Tanzania.