Mufind et al., J. Appl. Biosci. 2017 Réponse de huit variétés de haricot commun (Phaseolus vulgaris L.) à la fertilisation minérale dans la région de Kolwezi, Lualaba (RD Congo) 10894Journal of Applied Biosciences 111: 10894-10904 ISSN 1997-5902 Réponse de huit variétés de haricot commun (Phaseolus vulgaris L.) à la fertilisation minérale dans la région de Kolwezi, Lualaba (RD Congo) Response of eight varieties of common bean (Phaseolus vulgaris L.) to mineral fertilizers in the Kolwezi area, Lualaba (RD Congo) ABSTRACT Objective: This experiment was conducted to study the effect of chemical fertilizer and varieties on the yield and the profitability of the common bean in Kolwezi. Methodology and results : the field trial has been installed in Kolwezi, in a split plot design with three repetitions. The main factor included the variety (COD MLB 001, DC12496-50, HM 21-7, Jaune d'Uvira, K132, RWR 2245, UYOLE 96 and XAN 76) while the secondary factor, the fertilizer (NPK 10-20-10, Urée 46% N and KCl 50% K2O), was made up of two levels: no fertilization (0 kg of fertilizer ha -1 ) and fertilization (611 kg of fertilizers ha -1 ). The observations focused on yield parameters and profitability. The results showed that the common bean yield is influenced by the variety (the K 132 with a yield of 2378 kg ha -1 ), and the chemical fertilizer (784 kg ha -1 without fertilizer against 1304 kg ha -1 with fertilizer, or an increase of 66%). The study of the RVC (Ratio Value/Cost) shows that the use of chemical fertilizer to the common bean is generally less profitable, at the exception of the variety COD MLB 001 which gave an RVC equal to 2,1. Conclusion and Application of the results : the K 132 variety gave the best yield and can therefore be recommended to farmers of Kolwezi. However, the use of chemical fertilizer to the common bean can be made only with the COD MLB 001 variety. Furthermore, we will recommend research on the decreasing doses of fertilizer in order to determine the optimal dose for the seven varieties that have shown low profitability.