KAJIAN PERMEABILITAS, BOBOT ISI DAN POROSITAS PADA TANAH YANG DIOLAH DAN DIBERI PUPUK KOMPOS DI DESA TALIKURAN KECAMATAN REMBOKEN KABUPATEN MINAHASA

Abstract

STUDY OF PERMEABILITY, BULK DENSITY AND POROSITY IN SOIL TILLAGE AND COMPOST FERTILIZED SOIL IN TALIKURAN VILLAGE, REMBOKEN DISTRICT, MINAHASA REGENCY

Soil in agriculture has a special meaning and is very important as a growing medium for agricultural businesses. The importance of identifying soil properties is to determine the state of the soil in order to improve the physical, chemical, and biological properties of the soil. Soil physical properties include texture, permeability, bulk density and soil porosity. Soil permeability indicates the ability of the soil to pass water to the bottom layer of the profile. Bulk density is an indication of the density of the soil. Total porosity is the easiest initial indicator to determine whether the soil structure is good or bad. Tillage is any mechanical manipulation of the soil aimed at creating favorable soil conditions for plant growth. Compost is organic material that has become weathered and is an organic fertilizer. The purpose of this study was to determine the porosity, bulk density and porosity of the soil treated and given compost. This study used a survey method with purposive sampling with the determination of the sample. The things that were observed were the permeability, bulk density and porosity of the soil. The results showed that: 1). the value of soil permeability varies with the fast category, with the fastest value in soil treated with 15 tons/ha compost at 48,102 cm/hour and the lowest in soil treated with 30 tons/ha compost at 27,600 cm/hour; 2). the value of bulk density varied with the lowest soil density in soil treated with compost 45 tons/ha with a value of 0.792 gr/cm3 and the highest in soil treated with compost 15 tons/ha with a value of 0.901 gr/cm3; 3). soil porosity values varied with the lowest soil porosity value being treated with compost at a rate of 15 tons/ha with a value of 65.995% and the highest in soil treated with a compost dose of 30 tons/ha with a value of 74.316%.