Evolution of the Stock of Total Organic Carbon of Soil under the Culture of Cassava (Manihot Crantz esculenta) Installed in no Incineration in a Forest Fallow of the Yakonde Set (Y2) in Relation to the One of the Old Surrounding Secondary Forest of the Re

The objective pursued in this work is to try put evidence the ecological role of cassava culture installed by no burning biomass on management stock total organic carbon soil. Thus, an extent 0,48 ha has been delimited and subdivided 24 parcels which were pedological pits where 48 samples soil that means - unsettled others, appropriated slices 0-20 20-40 cm depth these served for determination matter, carbon, obvious density seven months age five varieties cassava. Five cultivars know Disanka, Obama, Zizila, Me vuazi Nsansi have a fallow forest enhancement incineration old secondary taken like reference, situated Yakonde set (Y2) Tray Isalowe Yangambi, RD Congo. results gotten during our experimentation reveals relative impact different cassava, with exception Zizila (T3) (T5) relation witness even though that, analyses statistical attest non meaningful differences between worth observed so much under forest. Nevertheless, decorated most suitable fashion general optics lasting agrosystèmes tropics region Yangambi particular.