It was hypothesized that due to previous tobacco production in the region, soil fertility had declined with increasing inclination by long-term erosion processes. Thus, the objectives of this study were 1. To determine the impact of leaf biomass from the tree legume Gliricidia at medium high and high input, simulated by Field and Homegarden history of the 30 twinned sites that were equally distributed in three inclination classes, 2. To separate more physical or chemical impairments of soil fertility by providing model crops with or without the recommended amount of mineral fertilizers.