M. Wisnu Mahardika, Lailatul Fitria, Nisfi Fariatul Ifadah, Soemarno
Bambang Village, Wajak District, Malang Regency is one of the potential areas for coffee development. Sandy soil conditions are an obstacle in coffee cultivation activities which cause problems with water availability and nutrient availability. Soil amendments using compost and clay can be done to address the problem. This study aims to analyze the effect of the interaction of clay soil and compost application on soil fertility based on indicators of cation exchange capacity and nutrient availability in two depths (0 - 30 cm and 30 - 60 cm) of sandy soil layers. This study used a completely randomized design-factorial (CRD-F) with twelve treatments and four replications. The results showed that compost treatment of 20 tons ha-1+50% clay significantly affected the soil CEC, pH, exchangeable base cations, base saturation, N-total, P-available, and soil organic matter on sandy soils compared to control treatment. © 2026 Author(s).
Department of Soil, Faculty of Agriculture, Brawijaya University, Malang, Indonesia
