CORRELATION BETWEEN RESISTIVITY DATA AND SOIL PHYSICAL CHEMICAL PROPERTIES IN THE ANALYSIS OF AGRICULTURAL SOIL FERTILITY CASE STUDY: FORMER LEUWIGAJAH LANDFILL, CIMAHI CITY, WEST JAVA

• Main Author: Restu Wahyudi, Agih
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/80402
• Institution: Institut Teknologi Bandung

The former Leuwigajah landfill has obvious consequences for the environment, causing problems with the risk of contamination of agricultural soil and public health. Therefore, to see the relationship between conductivity and resistivity data and the test results of physical chemical properties of agricultural soil in the former Leuwigajah landfill area, a thorough analysis is needed. However, conventional soil sample testing requires a lot of time, money and effort. The geophysical method approach was carried out with geoelectric resistivity and electromagnetic induction methods. Measurements were made using Geonics EM38-MK2, Supersting R8/IP, soil resistivity box and soil sampling at 6 points. The mapping results show that conductivity and resistivity values show clear differences throughout the study area. The mapping results show that the conductivity and resistivity values show clear differences across the study area. The flat zone shows underground resistivity of 0.126-50 ?m and conductivity of 34-48 mS/m. The sloping zone shows underground resistivity >100 ?m and conductivity 12-26 mS/m. The resistivity cross section shows that moderately high phosphorus has a resistivity of about 100 ?m, high water content has a lowmedium resistivity between 4 and 50 ?m, and potassium and nitrogen have resistivities between 10 and 50 ?m. When nutrient ions move through the soil, the movement of these ions makes the soil more conductive or less resistive. When the bulk density value of the soil is large and the pore space is small, it becomes more difficult for electricity and fluid to flow, so the resistivity of the soil increases. Water content also affects soil resistivity and conductivity values because water is a good conductor