Respirasi C-Mikroba dan C-Organik pada Lahan Perkebunan Kelapa Sawit Rakyat di Desa Silebo-Lebo dan PTPN II Kebun Tandem Kecamatan Sunggal Kabupaten Deli Serdang

Abstract

Soil respiration, microbial biomass carbon, and organic carbon are biological properties that can serve as indicators of soil fertility. The values of soil respiration and microbial biomass carbon are influenced by microbial activity within the soil. This study aims to measure the rate of respiration and microbial biomass carbon in smallholder oil palm plantations in Silebo-lebo Village and PTPN II Tandem Plantation, as well as to analyze the relationship between the two. The method used was a survey. The resulting data include respiration rates and microbial biomass carbon. The results showed that respiration rates varied between 6.8-24 mg C-CO2/day. The agricultural system using organic and chemical fertilizers on plantation land in Silebo-lebo Village can increase the respiration rate, microbial biomass carbon, and organic carbon. Further analysis revealed a relationship between respiration rate and microbial biomass carbon.