Nitrous oxide production from strongly acid tea field soils

  • Tokuda S
  • Hayatsu M
  • 8

    Readers

    Mendeley users who have this article in their library.
  • 22

    Citations

    Citations of this article.

Abstract

Nitrous oxide (N2 0) production from acid (pH 3.60) tea field soil under aerobic conditions was studied in a laboratory experiment. A large amount of N 20 (53 pg N g-I soil 14 d-I) was produced under aerobic conditions when ammonium and nitrate were added to the soil. It was assumed that the high N 20 produc- tion was an inherent property of the soil because soil pre-treatments (e.g., air-drying) did not affect it. A I5N tracer study indicated that N 2 was not produced from the acid tea field soil. N 20 was produced during biological reactions, and the contribution of N2 0 production during chemical reactions to the whole N20 production was negligible. Nitrapyrin (2-chloro-6-(trichloro- 0 production. These results indicate that denitrifi- methyl)-pyridine) and acetylene (0.1 Pa), which are selective nitrification in- hibitors, slightly reduced N2 cation is the main process of N20 production in acid tea field soil. The levels of N 20 production from four tea field soils collected from the same area were compared. The results showed that a large amount of N 20 is likely to be produced from a soil with a pH value below about 3.60 and to which a large amount of nitrogen fertilizer (more than 1,000 kg N ha-I y-I) had been added.

Author-supplied keywords

  • Acid tea field soil
  • Denitrification
  • Nitrogen fertilizer
  • Nitrous oxide

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Get full text

Authors

  • Shin Ichi Tokuda

  • Masahito Hayatsu

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free