In this study, we hypothesize that the chemically resistant
properties of BC, i.e., lignin, polyphenol, and aromatic
compound, contribute to mechanisms underlying methanogenesis
leading to a decrease in CH4 gas emission relative to
an equivalent addition of RS. Therefore, the aims of this study
were to evaluate total CH4 emissions during a rice growth
period and mechanisms involving soil Eh-pH changes underlying
methanogenesis as affected by application of BC and
RS amendments to paddy soils.