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ENERGY EFFICIENCY OF SELECTED ORGANIC FARMS AND THEIR INFLUENCE ON GREENHOUSE GASES EMISSION

Stalenga, Jarosław; Kuś, Jan and Madej, Andrzej (2005) ENERGY EFFICIENCY OF SELECTED ORGANIC FARMS AND THEIR INFLUENCE ON GREENHOUSE GASES EMISSION. Paper at: Researching Sustainable Systems - International Scientific Conference on Organic Agriculture, Adelaide, Australia, September 21-23, 2005. [Unpublished]

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Summary

Energy efficiency and greenhouse gas (methane and nitrous oxide) emissions were investigated in 2003 on 20 organic farms in the central part of Poland (Kujawsko-pomorskie voivodeship) using a questionnaire developed in the Institute of Soil Science and Plant Cultivation in Pulawy (Poland). Statistical data from the Central Statistical Office concerning the agriculture in the Kujawsko-pomorskie voivodeship was also used. A simple index (Ee) defined as a ratio of the total energy value of agricultural production (Pe) to the material and energy inputs (Ne) (in MJ) was used to evaluate the energy efficiency. The average value of this index was 2.05; however, it ranged from 0.04 to 16.59. In the organic farms, direct energy carriers (liquid and solid fuels and electric energy) contributed most (about 45%) to total energy inputs. Plant products had the biggest share in total energy value of the yields (81.7%), of which cereals were the most important component (56.4%). Animal products had only an 18.3% share, dominated by meat. Average methane emission per ha of agricultural land (AL) was 36 kg per year, 8 kg more than the average value for the whole voivodeship. This was mainly due to the higher cattle density on organic farms. Emission of N2O from the organic farms was about half the average of others in the voivodeship. In the group of 20 organic farms, total methane and nitrous oxide emission expressed in units of Global Warming Potentials (GWP) was 985 and was 45 units less than the average for the Kujawsko-pomorskie voivodeship.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:energy efficiency, greenhouse gases, methane, nitrous oxide
Subjects: Environmental aspects > Biodiversity and ecosystem services
Research affiliation: International Conferences > 2005: 1st ISOFAR Conference > 2005: 1st ISOFAR Conference
Related Links:http://orgprints.org/4013/, http://www.isofar.org/adelaide2005, http://orgprints.org/view/projects/int-conf-isofar-2005.html
Deposited By: ISOFAR,
ID Code:4328
Deposited On:15 Nov 2005
Last Modified:12 Apr 2010 07:30
Document Language:English
Status:Unpublished
Refereed:Peer-reviewed and accepted
Additional Publishing Information:The paper presented here is the final paper submitted by the authors to the conference Researching Sustainable Systems.
The final edited papers are available with the following publication:
Köpke, Ulrich; Niggli, Urs; Neuhoff, Daniel; Cornish, Peter; Lockeretz, Willie und Willer, Helga, (Hrsg.) (2005) Researching Sustainable Systems. Proceedings of the First Scientific Conference of the International Society of Organic Agriculture Research (ISOFAR), Held in Cooperation with the International Federation of Organic Agriculture Movements (IFOAM) and the National Association for Sustainable Agriculture, Australia (NASAA), 21 – 23 September 2005, Adelaide Convention Centre, Adelaide, South Australia.. Research Institute of Organic Agriculture FiBL, CH-Frick, and International Society of Organic Agriculture Research (ISOFAR), c/o Institute of Organic Agriculture (IOL), DE-University of Bonn. http://orgprints.org/4013/
Distribution: Paper copies may be ordered from FiBL at a cost of 28 Euros plus mailing costs (see FiBL shop at http://www.fibl.org/shop); FiBL order number 1394. A PDF version is available free of charge for ISOFAR members via the member area of www.isofar.org.

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