Hansen, Sissel; A. Bleken, Marina; Løes, Anne-Kristin; Govasmark, Espen; Falk Øgaard, Anne and Breland, Tor Arvid (2007) Sustainable nutrient supply of organic farming challenged by specialisation. In: Lund, Mogens and Larsen, Torben Ulf (Eds.) NJF Report: NJF 23rd Congress 2007 - Trends and Perspectives in Agriculture, Nordic Association of Agricultural Scientists, 3 (2), NJF Report, no. 3 (2), pp. 193-194.
Diverse production on each farm, with livestock density well balanced with crop production, has been the traditional way to maintain the soil fertility in organic farming systems. However, there is a trend of specialisation into stockless arable or livestock farms. Stockless farming is challenged by depletion of soil mineral reserves and soil organic matter, risk of large nutrient losses after green manuring, and dependence on nutrient supply from external sources. In this paper, we focus on these challenges to sustained soil fertility.
|EPrint Type:||Conference paper, poster, etc.|
|Type of presentation:||Paper|
|Keywords:||sustainability, nutrient depletion, green manure, organic farming systems|
|Subjects:|| Environmental aspects|
"Organics" in general
Farming Systems > Farm nutrient management
|Research affiliation:|| Sweden > Nordic Association of Agricultural Scientists NJF|
Norway > Bioforsk - Norwegian Institute for Agriculture and Environmental Research > Bioforsk Organic Food and Farming Division
|Deposited By:||Hansen, Sissel|
|Deposited On:||01 Nov 2007|
|Last Modified:||12 Apr 2010 07:36|
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