Reducing methane and nitrous oxide production in different soil types through utilizing Turmeric Rhizome (Curcuma domestica Val)

Abstract

Indonesia is rich in flora diversity which is used to support agricultural development. One of the useful plants in agricultural cultivation is turmeric rhizome. Turmeric rhizome (Curcuma domestica Val) is a natural ingredient that can function as an inhibitor of the production of methane and nitrous oxide in the soil. A laboratory experiment aimed to determine the potential of turmeric rhizome on the production rate of CH4 and N2O in different soil types. The experiment used a completely randomized factorial design with 3 replications, the treatment was soil type factor and nitrification inhibitor factor. The rate of GHG production (methane and nitrous oxide) in the application of nitrification inhibitors (NI), both natural (turmeric rhizome) and commercial (DCD) was lower than without the application of NI on Inceptisols, Vertisols, and Alfisols. Turmeric rhizome natural ingredients provide promising prospects that are cheap and easy to obtain as an inhibitor of the rate of CH4 and N2O production for paddy fields.