Kajian Perbedaan Tekstur Tanah Aluvial Terhadap Perkolasi dan Ketersediaan Air tanah

Abstract

This study aimed to analyze the effect of different alluvial soil textures on physical properties, particularly percolation rate and water availability. The soil samples consisted of Aluvial 1 (sandy loam: sand 66%, silt 18%, clay 16%), Aluvial 2 (sandy clay loam: sand 55%, silt 10%, clay 35%), and Aluvial 3 (silt loam: sand 33%, silt 52%, clay 15%). Laboratory analyses included bulk density, porosity, soil pH, organic matter, field capacity, permanent wilting point, percolation, and water availability. The results showed the lowest bulk density in Aluvial 1 (0.53 g/cm³) and the highest in Aluvial 3 (0.64 g/cm³). Porosity was highest in Aluvial 1 (76%) and lowest in Aluvial 2 (72%). Percolation was fastest in Aluvial 1 (12.73 cm/hour) and slowest in Aluvial 2 (6.54 cm/hour). Organic matter was highest in Aluvial 3 (2.241%) and lowest in Aluvial 1 (1.758%). Water availability was highest in Aluvial 3 (13.17%) and lowest in Aluvial 1 (12.44%). In conclusion, sandy soils had high percolation but low water retention, sandy clay loam showed moderate characteristics, while silt loam was most effective in storing water and organic matter despite slower percolation.