Poster prepared by By Samy B. Bacigale, Leon N. Nabahungu, Paulin N . Njingulula, Serges M. Amato, Chris C. Okafor, Godfrey J. Manyawu, Peter Thorne, Deogratius Havyarimana and Bernard Vanlauwe for the AGRF2019 Conference, Accra, Ghana, 3-6 September 2019