Influence of Liming Intensity on Fractions of Humified Organic Carbon in Acid Soil: A Case Study

Soil pH influences the composition and activities of microbial communities, which are driving transformations soil organic carbon (SOC). However, effect liming on SOC sequestration remains controversial. Evaluation humified fractions was one most important tasks this work. Studies were carried out in long-term field experiment using slaked-lime rates 0.5 or 2.0, depending hydrolytic acidity. It determined that did not increase content, but led to redistribution SOC. The amount mobile humic acids decreased while intensity increased. When at 2.0 rate, lowest HA1 level (0.251 g kg−1 C) highest HA2 (0.21 found. could be stated liming, as a measure, allows stabilization HA FA by cation bridging mechanism. Liming resulted slower mineralization same time it also form valuable acids. An consistent pattern transformation identified study can applied selecting suitable combination agricultural practices, promoting fertility.