Effect of Incubation Study of Coffee Husk on the Amendment of Chemical Properties on Acid Soil

Pot experiment incubation study was carried out to investigate the influence of biochar and lime on selected soil chemical properties of Nitisol loam soil with characteristic of high Phosphorus fixation and acidity. The treatments included (control, 10 t h coffee husk biochar (CHB), 20 t h CHB, lime and 10 t h CHB +50% lime). These were employed in Randomized Complete Block Design with three replications. The studied soil were collected and subjected to analysis of variance and treatment means were compared at the 0.05 probability level using list significant difference test .The results showed that soil pH increased from 4.89 to 6.68 by applying 20 t h CHB biochar at the same times the exchangeable acidity and acicd cation are reduced significantly and. Moreover, liming significantly (P ≤ 0.05) increased Cation Exchange Capacity (CEC) and available Phosphorus. This study stresses the importance of long-term lime experiments on major crops in order to investigate the residual effects and reduce lime costs.