Nitrous oxide production from injected liquid dairy manure

S. D. Comfort, K. A. Kelling, D. R. Keeney, J. C. Converse

Research output: Contribution to journalConference article

71 Scopus citations

Abstract

Injection of liquid organic wastes into soil promotes conditions that may be conducive to denitrification by creating an anaerobic environment abundant in inorganic N and readily oxidizable C. To quantify gaseous N loss, we measured N2O emissions from simulated waste injections applied to soils in large wooden containers (71 by 42 by 44 cm). Liquid dairy manure was injected into the soil at rates commonly used for crop production (79 000 L ha-1). The nitrification inhibitor nitrapyrin [2-chloro-6-(trichloromethyl)pyridine] was used to further evaluate nitrification-dentrification losses. Nitrous oxide emissions, with and without C2H2 treatment, were estimated by passing air across the soil surface above an injection zone and trapping emitted N2O onto a molecular sieve. The largest emission of N2O occurred shortly after injection, followed by a shift to N2.

Original languageEnglish (US)
Pages (from-to)421-427
Number of pages7
JournalSoil Science Society of America Journal
Volume54
Issue number2
DOIs
StatePublished - 1990
Event54th Annual Meeting of Soil Science Society of America - San Antonio, TX, USA
Duration: Oct 21 1990Oct 26 1990

ASJC Scopus subject areas

  • Soil Science

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