Comparison of fate of nitrogen applied to 4 different kinds of soils with particular reference to denitrification
2002
Nishio, T. (National Agricultural Research Center, Tsukuba, Ibaraki (Japan)) | Li, X. | Komada, M.
We determined the in situ denitrification rate of four different kinds of soils during the growing season of maize by the combination of an intact core method and an acetylene inhibition technique. The soils used were Low-humic Andosols, Cumulic Andosols, Gray Lowland Soils, and Yellow Soils to which 20 Mg ha sup(-1) of manure was applied every year. In addition, we simultaneously investigated the N balance sheet of the same maize fields using l5N-labelled fertilizer. The average denitrification rate during the growing season of maize (from May 21 to August 24, depth: 0-20 cm) was 2.0 g N ha sup(-1) d sup(-1) for Low-humic Andosols, le.lgNha
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