Mateete Bekunda, International Institute of Tropical Agriculture-Tanzania, Arusha, Tanzania, United Republic of, Haroon Sseguya, International Institute of Tropical Agriculture, Morogoro, Tanzania, United Republic of, Silvanus Mruma, NAFAKA, Morogoro, Tanzania, United Republic of, Adebayo Abass, International Institute of Tropical Agriculture, Dar es Salaam, Tanzania, United Republic of, Regis Chikowo, Box MP167, Africa RISING, Harare, ZIMBABWE and Sieglinde S. Snapp, Africa RISING/Michigan State University, Arusha, Tanzania, United Republic of