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Anaerobic digestion of manure - consequences for plant production

Løes, Anne-Kristin; Johansen, A.; Pommeresche, R. and Riley, H. (2013) Anaerobic digestion of manure - consequences for plant production. In: Løes, Anne-Kristin; Askegaard, Margrethe; Langer, Vibeke; Partanen, Kirsi; Pehme, Sirli; Rasmussen, Ilse A.; Salomon, Eva; Sørensen, Peter; Ullvén, Karin and Wivstad, Maria (Eds.) Organic farming systems as a driver for change, NJF Report, no. 9 (3), pp. 117-118.

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Document available online at: http://www.njf.nu/filebank/files/20130827$203251$fil$4F15WCXLGK9vjP9XUSjP.pdf


Summary

Organic farming systems are today dependent upon fossil energy. Another challenge are soil nutrient concentrations, which may be depleted with time even in animal husbandry systems (Løes & Øgaard 2001). Anaerobic digestion (AD) of animal manure may produce biogas to replace fossil fuels, and reduce methane (CH4) emissions during manure storage. Co-digestion of substrates rich in energy increases the economic viability of the biogas plant, and off-farm substrates such as fish silage or household waste may add nutrients to the farming system. AD may also ease manure handling, while reducing the amount of weed seeds and animal pathogens. A reduced proportion of easily degraded C in the AD-manure may however impact the soil fauna/microflora and humus levels. Mineralization of organic N during AD may increase nutrient availability and crop yields. Possibly, the increased levels of root and shoot residues may compensate for the organic C removed via AD.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Agrovoc keywords:
Language
Value
URI
English
Biogas
http://aims.fao.org/aos/agrovoc/c_9262
English
Liquid manures
http://aims.fao.org/aos/agrovoc/c_4373
English
Nutrient management
http://aims.fao.org/aos/agrovoc/c_330697
English
Crop yield
http://aims.fao.org/aos/agrovoc/c_10176
English
Soil fertility
http://aims.fao.org/aos/agrovoc/c_7170
Subjects: Crop husbandry > Composting and manuring
Farming Systems > Farm nutrient management
Research affiliation: International Conferences > 2013: NJF Seminar 461 - Organic farming systems as a driver for change
ISSN:1653-2015
Deposited By: Sørensen, Peter
ID Code:24552
Deposited On:06 Nov 2013 21:48
Last Modified:06 Nov 2013 21:48
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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