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Science 16 May 1980:
Vol. 208. no. 4445, pp. 749 - 751
DOI: 10.1126/science.208.4445.749

Articles

Nitrous Oxide from Soil Denitrification: Factors Controlling Its Biological Production

MARY K. FIRESTONE 1, RICHARD B. FIRESTONE 2, and JAMES M. TIEDJE 3

1 Department of Crop and Soil Sciences, Michigan State University, East Lansing 48824
2 Heavy Ion Laboratory, Michigan State University
3 Departments of Crop and Soil Sciences and Microbiology, Michigan State University

Increasing concentrations of nitrate, nitrite, and molecular oxygen enhanced production of nitrous oxide relative to molecular nitrogen during denitrification in soils. Soil acidity interacted with nitrate to increase the ratio of nitrous oxide to molecular nitrogen. In response to anoxic conditions, nitrous oxide production initially increased but nitrous oxide was then consumed, a pattern which resulted from the sequential synthesis of nitrogenous oxide reductases.

Submitted on October 22, 1979
Revised on February 21, 1980


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Science. ISSN 0036-8075 (print), 1095-9203 (online)