Nitrogen mineralization from paddy and upland soils under flooded and nonflooded incubation

  • Ono S
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Abstract

An incubation study was carried out to compare the mineralization of soil organic N under flooded condtions with that under nonflooded conditions. Soils used in this incubation were ari-dried paddy soils (37 samples), air-dried upland soils (22 samples), and fresh-moist paddy soils (7 samples). The amount of mineralization of soil organic N was larger under flooded incubation than under nonflooded incubation, in all the soil samples used. The differences in the amount of N mineralized between flooded and nonflooded incubation wer generally larger for air-dried paddy soil samples than for air-dried upland soil samples.

Author-supplied keywords

  • Flooded and nonflooded incubation
  • Paddy soils
  • Soil N mineralization
  • Upland soils

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Authors

  • Shin ichi Ono

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