Water-soluble organic materials in paddy soil ecosystem, 2: Effects of temperature on contents of total organic materials, organic acids, and methane in leachate from submerged paddy soils amended with rice straw
1993
Kimura, M. (Nagoya Univ. (Japan)) | Minoda, T. | Murase, J.
Column experiments were conducted to analyze the effect of the temperature on the amounts of organic materials in the leachate, especially organic acids and methane, from samples of the plow layer soil amended with rice straw. Total amount of inorganic carbon in the leachate during the 30-d period of incubation in relation to the temperature was 18 25 - 30 37 45 degrees C. Total amount of organic carbon in the leachate was significantly larger under 45 degrees C incubation than that at other temperatures. Acetic acid was the dominant organic acid in the leachate regardless of the temperature. Butylic and propionic acids were also present in large amounts in the early and the late period of incubation of temperatures ranging between 18 and 37 degrees C, while only acetic acid was the dominant organic acid during the 30-d period of incubation at 45 degrees C
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