Nabila Safira, Nisfi Fariatul Ifadah, Soemarno
Bambang Village, Wajak District is one of the areas in East Java that is currently developed for coffee cultivation. Observations in the field show that the soil in the Bambang Village Coffee field has sandy soil characteristics such as its weak structure and easy to transfers waters. This causes the soil to become porous and water can easily escape. The movement of water in the soil which is measured in saturated conditions is referred to as saturated hydraulic conductivity (SHC). KHJ is influenced by various soil properties such as available water capacity (AWC) and soil organic matter (SOM). Efforts to improve soil properties are carried out to reduce the potential for erosion by adding compost and clay. Result show, the addition of 50% clay soil and 20 ton ha-1 compost can increase the available water capacity at depths of 0 - 30 cm and 30 - 60 cm by 24.22% and 19.96% each with the increase of each depth by 48.4% and 23.67% compared to the control treatment. The best treatment to reduce KHJ at 0 - 30 cm depth was shown in the addition of 20 ton ha-1 of compost and 25% clay by 4.77 cm h-1 while at 30 - 60 cm depth was shown in the addition of 50% clay by 2.99 cm h-1. Each treatment decreased by 65% and 75.3% compared to the control treatment. © 2026 Author(s).
Department of Soil, Faculty of Agriculture, Brawijaya University, Malang, Indonesia
