The management of sandy soil in Bateke plateau to feed Kinshasa population in continued growth, is one of the problems that arises in this urban peripheral agriculture. Agroforestry in time, alternating trees and crops on the same land was used as technical means to increase fertility and production. However, agricultural practice in the long term at Bateke plateau showed that agroforestry was not able alone to ensure continuity of production on the same land. In this study, we tested the effect of biochar associated with litter from an agroforestry system could have on improving maize production in Bateke plateau. We observed that forty one and five months respectively after application of biochar and litter maize production was influenced favorably. Among all combinations of biochar doses (0, 2, 4 and 8 kg / m2) and Acacia mangium litter doses (0, 5, 10 and 20 t / ha), the combination of 4 Kg / m2 of biochar with 20 t / ha of litter was the best with 2019 kg / ha of maize cobs with spathe. Moreover, the presence of the clipped hedge has had an effect on the stems and maize cobs differently on plants in his neighborhood and those in the middle of the experimental plot.

In order to establish an agroforestry carbon sink to Bat