- Robin, Paul
- Germain, Philippe
- Lecomte, Marcel
- Landrain, Brigitte
- Li, Yinsheng
- Cluzeau, Daniel
Treatment of liquid manure can result in the production of ammonia, nitrous oxide and methane. Earthworms mix and transform nitrogen and carbon without consuming additional energy. The objective of this paper is to analyse whether earthworms modify the emissions of NH3, N2O, CH4 and CO2 during vermifiltration of pig slurry. The experiment used mesocosms of around 50 L, made from a vermifilter treating the diluted manure of a swine house. Three levels of slurry were added to the mesocosms, with or without earthworms, during one month, in triplicate. Earthworm abundance and gas emissions were measured three and five times, respectively. There was a decrease in emissions of ammonia and nitrous oxide and a sink of methane in treatments with earthworms. We suggest that earthworm abundance can be used as a bioindicator of low energy input, and low greenhouse gas and ammonia output in systems using fresh slurry with water recycling. (C) 2010 Elsevier Ltd. All rights reserved.
- Agricultural Engineering
- Biotechnology & Applied Microbiology
- Energy & Fuels
[Luth; Cluzeau, Daniel] Univ Rennes 1, UMR EcoBio 6553, IFR CAREN, CNRS,Stn Biol, F-35380 Paimpont, France; [Luth; Robin, Paul; Germain, Philippe; Lecomte, Marcel] INRA, Agrocampus Ouest, UMR SAS, IFR CAREN, F-35000 Rennes, France; [Landrain, Brigitte] Chambres Agr Bretagne, Stn Expt Guernevez, F-29520 St Goazec, France; [Li, Yinsheng] Shanghai Jiao Tong Univ, Dept Environm Sci & Technol, Sch Agr & Biol, Shanghai 201101, Peoples R China
Luth (reprint author), INRA, Agrocampus Ouest, UMR SAS, CS 84215, 65 Rue St Brieuc, F-35342 Rennes, France.