[1]National Center for Agronomic Research Station of Korhogo-Lataha Korhogo BP 856 C?te d'Ivoire;
[2].Jean Lorougnon Guédé University (UJLG) Daloa BP 150 C?te d'Ivoire;
[3]National Center for Agronomic Research Station of La Mé Abidjan 13 BP 989 C?te d'Ivoire;
[4]University Felix Houphouet Boigny (UFHB) Abidjan 22 BP 582 C?te d'Ivoire;
[5]University Peleforo Gon Coulibaly (UPGC) Korhogo BP 1328 C?te d'Ivoire;