Amélioration des propriétés de charge de surface des sols fortement altérés de l’Hinterland de Kinshasa par application de la dolomie rose de Kimpese et de la parche de café

The Arenosols of Kinshasa’s hinterland are characterized by a low chemical fertility, an acid reaction and a mineralogical composition limited to quartz, kaolinite and some residual oxides of Al and Ti. The effects of pink dolostone from Kimpese (PDK) and coffee waste (CW) application on the charge properties of the Batéké soils were studied in vitro using a completely randomized experimental design. Different amounts of 6.4 g CW. (kg sol)-1 and 1748 mg PDK. (kg sol)-1, corresponding to 20.0 t.ha-1 of CW and 5.46 t.ha-1of finely grounded PDK were mixed with topsoil (0-25 cm), and incubated and leached for 3, 6, 9, and 12 months. The use of CW and PDK as amendments resulted in a significant (p