Methane (CH4) emission flux estimation in SRI (system of rice intensification) method rice cultivation using different varieties and fertilization

Abstract

The agricultural sector is one of the contributors of the greenhouse gasses emission especially CO2, CH4 and N2O. In its agricultural practice, rice paddy fields in Indonesia is cultivated twice to three times a year. Conventional rice planting method using water inundation and chemical fertilizer can result in the increase of greenhouse gasses emission. One of those gasses is methane (CH4). Methane is formed through the decomposition of organic materials anaerobically in the rhizosphere with the help of methanogenic microbes. The release of methane can be influenced by several factors among them are the nature of the soil, irrigation system, fertilization and varieties used. The strategy to reduce emission conducted in this research are the usage of varieties that are considered to be low on methane emission such as Ciherang and IR64, rice paddy cultivation SRI (System of Rice Intensification) method using intermittent irrigation as well as fertilization. The setting of the intermittent irrigation uses IoT based (Internet of Thing) sensor technology for water level adjustment. The aim of this research is to analyze the methane flux produced from SRI method rice paddy cultivation based on the varieties used and different kinds of fertilization.