alexa Nitrous Oxide and Methane Emissions following Application of Animal Manures to Grassland
Engineering

Engineering

Journal of Civil & Environmental Engineering

Author(s): D R Chadwick, B F Pain, S K E Brookman

Abstract Share this page

Nitrous oxide (N2O) and methane (CH4) emissions were measured from grassland following manure applications at three times of the year. Pig (Sus scrofa) slurry and dairy cow (Bos taurus) slurry were applied in April, at equal rates of ammoniacal-N (NH+4-N), and in July, at equal volumetric rates (50 m3 ha−1). I n October, five manure types were applied to grassland plots at typical application rates: pig slurry, dilute dairy cow effluent, pig farm yard manure (FYM), beef FYM and layer manure. Emissions were measured for 20, 22, and 24 d, respectively. In April, greater cumulative emissions of N2O-N were measured following application of dairy cow slurry (1.51 kg ha−1) than pig slurry (0.77 kg ha−1). Cumulative CH4 emissions following application in April were significantly greater from the dairy cow slurry treatment (0.58 kg ha−1) than the pig slurry treatment (0.13 kg ha−1) (P < 0.05). In July, significantly greater N2O-N emissions resulted from pig slurry-treated plots (0.57 kg ha−1) than dairy cow slurry-treated plots (0.34 kg ha−1). Cumulative net CH4 emissions were very low following July applications (<10 g ha−1). In October, the lowest N2O-N emission resulted from application of dilute dairy effluent, 0.15 kg ha−1, with the greatest net emission from the application of pig slurry, 0.74 kg ha−1. Methane emissions were greatest from the plots that received pig FYM, resulting in a mean cumulative net emission of 2.39 kg ha−1.

This article was published in Journal of Environmental Quality and referenced in Journal of Civil & Environmental Engineering

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Relevant Topics

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords