, Volume 21, Issue 4, pp 319-322

Effects of inorganic fertilizers and micronutrients on methane production from wetland rice (Oryza sativa L.)

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Abstract

We compared the effects of adding different forms of nitrogenous fertilizers on the production of CH4 in soil and on CH4 emission from rice plants, Urea and diammonium phosphate gave the highest rates of CH4 production from the soil and emission through rice plants, followed by (NH4)2SO4. NaNO3 was the least effective. The effects of micronutrients like Mo, Ni, or B were more prominent than those of Fe, Mn, Zn, V, or Co. It is concluded that CH4 emission from rice paddies is influenced by both macro- and micronutrients, through effects on both microbial methanogenesis in soil and elimination through rice plants as a consequence of the effects on plant growth.