INFLUENCE OF BIOCHAR VARIANTS ON SOIL ORGANIC MATTER DISTRIBUTION AND CARBON SEQUESTRATION

Abstract

This study evaluates the effects of different biochar types on soil organic matter fractions, carbon sequestration, soil properties, and microbial activity. Three biochar variants—agricultural waste (Biochar 1), wood (Biochar 2), and manure-based (Biochar 3)—were applied to sandy loam soil under controlled conditions. Parameters assessed included particulate and dissolved organic matter, humic substances, total organic carbon, pH, cation exchange capacity (CEC), electrical conductivity (ECe), and microbial biomass. Biochar 3 (Manure) showed the most significant improvements, notably increasing organic matter fractions, total carbon content, and microbial activity. It also enhanced soil pH, CEC, and ECe. These findings underscore the effectiveness of manure-based biochar in improving soil health, supporting sustainable agriculture, and enhancing long-term carbon storage. Biochar's role in soil improvement and carbon mitigation marks it a valued tool for sustainable land management and climate change alleviation.