Electrical resistivity to investigate root zone of oil palm

Due to its higher economic value per hectare than other oil-producing species, oil palm (Elaeis guineensis) is an important plantation crop. Maximum growth and productivity require a large root system. Root distributions in oil palm plantations are identified and assessed using electrical resistivity, a non-destructive method. The spatial distribution of primary, secondary, and tertiary root zones was examined in a three-year-old oil palm plantation in Batu Penyu, Gantung District, East Belitung Regency. Root zone analyzed measurements using electrical resistivity methods and RES2DINV software. Primary and secondary roots dominate the root system, with tertiary and quaternary roots extending horizontally 1.5-2.5 meters from the main trunk and depths up to 30 cm. Since the three-year-old oil palms and intercropped food-producing plants have different soil areas, this horizontal spread prevents competition in the rooting zone. © 2025 Institute of Physics Publishing. All rights reserved.