home    about    browse    search    latest    help 
Login | Create Account

Ökologische Bewirtschaftung erfordert die Steuerung von innerbetrieblichen Nährstoffflüssen


Downloads per month over past year

View more statistics

Sundrum, Albert (2013) Ökologische Bewirtschaftung erfordert die Steuerung von innerbetrieblichen Nährstoffflüssen. Paper at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

PDF - Accepted Version - German/Deutsch


Self-organised ecosystems are characterised by a high efficiency in the use of limited nutrient resources whereas the productivity is generally low. To utilise the potentials of agro-ecosystems with respect to a high nutrient efficiency, there is a need to steer the nutrient flow and provide good starting and adaptation conditions for living organisms.
While organic standards provide no operational guidelines on how to improve nutrient management, a concept was developed to improve N-efficiency on the farm level. N-import into the farm and N-flow through subordinate sub-systems (‘livestock’, ‘dung storage/ distribution’, ‘arable land/pasture’, and ‘feed storage/distribution’) were assessed on 9 organic and 7 conventional dairy farms, based on farm specific data and by making use of equations from the literature to estimate relevant figures.
N-efficiency varied considerably between sub-systems within and between farms, however showing no significant difference between the production methods. The results indicate a large but farm specific potential for improvements, contradicting any attempts of generalised statements and recommendations. Instead of minimum standards, a high level of N-efficiency that is beyond the average of conventional farms should be established as a leading aim in organic agriculture to justify claims.

EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Nährstoffeffizienz, Milcherzeugung, Agrarökosystem, Paradigmenwechsel
Subjects: Animal husbandry > Production systems > Dairy cattle
"Organics" in general
Knowledge management > Research methodology and philosophy > Specific methods > Surveys and statistics
Farming Systems
Knowledge management > Research methodology and philosophy > Systems research and participatory research
Animal husbandry
Animal husbandry > Feeding and growth
Knowledge management > Research methodology and philosophy > Specific methods
Environmental aspects
Knowledge management
Research affiliation: Germany > University of Kassel > Department of Animal Nutrition and Animal Health
International Conferences > 2013: Scientific Conference Organic Agriculture > Nature & environment
Related Links:http://www.wissenschaftstagung.de/, https://www.verlag-koester.de/index.php?id=114&tx_fbmagento
Deposited By: Sundrum, Prof. Dr. Albert
ID Code:21474
Deposited On:09 Sep 2013 12:33
Last Modified:27 Nov 2013 15:05
Document Language:German/Deutsch
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Dieser Beitrag ist im Tagungsband der 12. Wissenschaftstagung erschienen.
Dr. D. Neuhoff, C. Stumm, S. Ziegler u.a. (Hrsg.)
Beiträge zur 12. Wissenschaftstagung Ökologischer Landbau
Ideal und Wirklichkeit: Perspektiven ökologischer Landbewirtschaftung
Erscheinungsjahr: 2013
ISBN-13: 9783895748158
Verlag Dr. Köster, Berlin

Repository Staff Only: item control page