Keanekaragaman Nematoda Di Perkebunan Teh Gunung Gambir Kabupaten Jember sebagai Bioindikator Kesehatan Tanah serta Pemanfaatannya sebagai Leaflet

Abstract

Nematodes are microfauna that play an important role in soil processes and are often used as biological indicators because they reflect ecological conditions and soil characteristics. Nematodes excel as bioindicators because they are easy to find in various soil types, easy to extract, and play a role in decomposition, nutrient cycling, and soil quality control. This study aims to identify the genus of nematodes, determine their diversity, and assess soil health in the Gunung Gambir Tea Plantation Area based on the diversity of nematodes found. this research was conducted in September - December 2024 which started from the stage of taking soil samples at 9 points then extraction and continued with the identification process. this research uses quantitative descriptive methods. Based on the results of the study, 11 genus of nematodes with a total of 1160 individuals were obtained, which were dominated by plant-feeders and fungus-feeders nematodes. Index Shannon-wiener diversity (H') of nematode in tea plantations is in the medium category and Simpson's dominance index (C) is low. The plant parasite index (PPI) is in the medium category, while the nematode maturation index (MI) is in the medium category and indicates that the land ecosystem disturbance is moderate. The PPI/MI ratio value was 1.30, indicating that the environment in the ecosystem contained many sources of nutrients but the utilization of these resources by higher plants was less than optimal. The product results of this study are in the form of leaflets that have been validated by material experts, media experts, and users with scores of 86.6%, 86%, and 89% with an average of 87.2% which indicates that the leaflet is very suitable for use.