Farmer’s Adoption of Improved Cassava Varieties in the Humid Forest Agro-ecological Zone of Cameroon

1University of Yaoundé II, Faculty of Science Economics and Management P.O. Box 18 Soa, Cameroon. 2University of Yaoundé I, Faculty of Science, Department of Plant Biology, P.O. Box 812 Yaoundé, Cameroon. 3Institute of Agricultural Research for Development (IRAD), P.O. Box 2123 Yaoundé, Cameroon. 4University of Bamenda, Higher Technical Teacher Training College, Department of Civil Engineering and Forestry Techniques, P.O. Box 39 Bambili, Cameroon.