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Rates of N 2 O evolution from N‐fertilized soil
Author(s) -
McKenney D. J.,
Wade D. L.,
Findlay W. I.
Publication year - 1978
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl005i009p00777
Subject(s) - loam , fertilizer , nitrogen , agronomy , nitrous oxide , environmental science , zoology , aeration , nitrogen fertilizer , flux (metallurgy) , soil water , chemistry , soil science , biology , ecology , organic chemistry
We have directly measured nitrous oxide flux rates from well aerated agricultural soil (Fox sandy loam and Harrow fine sandy loam) located in Essex County, southwestern Ontario. Evidence was obtained showing that the release of N 2 O was strongly related to the rate of fertilizer application during the interval 6 to 43 days after soil treatment. Emission rates on NH 4 NO 3 fertilized plots planted to corn were in the range 7.04 × 10 −4 to 2.64 × 10 −2 kg N ha −1 day −1 ; rates on more heavily fertilized plots planted to burley tobacco were generally higher in the range 1.45 × 10 −3 to 3.20 × 10 −2 kg N ha −1 day −1 . We briefly discuss our observations in terms of loss of fertilizer nitrogen as N 2 O and the impact of increasing fertilizer addition on the extent of N 2 O evolution.