Residual effects of corncob biochar on tropical degraded soil in central Uganda

Abstract Background The residual effects of biochar are yet to receive adequate research attention in Sub-Saharan Africa despite the assumption that positive effect may last longer on degraded tropical soil. Hence a field experiment was conducted assess biochar, farmyard compost and NPK fertilizer applications Ferralsol central Uganda. used for study previously conduct experiments two seasons contribution corncob chemical properties this highly Result co-applied with significantly (p < 0.05) increased some soil such as pH, available phosphorus, organic carbon, potassium than control. also pH effective cation exchange capacity compared solely applied fertilizer. Collard plant height, canopy, stem girth, number leaves, leaf length, total biomass were higher amended unamended Conclusion It concluded addition had significant soils compost.