Rice paddy field on Gentungan, Karanganyar: Soil C Humic Acid, Fulvic Acid, and Stock as Affected by Period of Organic Practices

Abstract

Abstract Carbon sequestration (CS) is an essential strategy for mitigating climate change caused by increasing concentrations of greenhouse gases (GHGs in the atmosphere). Agriculture provides greenhouse gas effects, one of which is in wetland agriculture (rice fields). The research aims to evaluate organic, semi-organic, and conventional farming systems in rice fields on the levels of humic acid, fulvic acid, and carbon stock. The research method is descriptive, explorative, survey, and laboratory analysis. The research was conducted in Gentungan, Karanganyar Regency, Indonesia. Organic farming (4,7, and 10 years), semi-organic and conventional. The results showed no significant difference in the levels of humic acid, fulvic acid, and carbon stock between organic, semi-organic, and conventional farming systems. Organic farming systems increase the humic acid, fulvic acid, and carbon stock in paddy fields compared to semi-organic and conventional.