Organic farming principles

The availability of P from RP mainly depends on the reactivity of the material and on soil pH. Combined applications of RP and organic materials may foster P solubility (Sanchez et al., 1997). Organic farming principles permit the use of RP only in non-acidulated form, which implies that highly reactive RP should be used. High- to medium-reactive RP deposits exist in Angola, Burkina Faso, Mali, Niger,... 

Schermer, M. (2004) Ecoregions and Globalisation — Chances and consequences of a territorial application of organic farming principles. Paper presented at XI IRSA World Congress, Norway. 

IFOAM (2005) The principles of organic farming. Available as a web-publication on http //www.ifoam.org/organic facts/principles/pdfs/Principles Organic Agriculture.pdf... 

In the European Union, organic farming is implemented, labelled, controlled and marketed according to EC Reg. 2092/91 and its updates. Within the European Union, IFOAM Basic Standards are replaced by EC Reg. 2092/91. Thus, EC Reg. 2092/91 provides a framework for organic farming within the EU based on subsidiary principle and its implementation. It is to a certain extent flexible with respect to adaptation, supplementation, and precision of technical details in respect to national conditions. 

A system of analytical methods of particular application to organic farming systems was created by Dr Friedrich M. Balzer in the early 1980s. The principles of his system are described in Balzer (1985), and is the methodology favoured by the Elm Farm Research Centre http //www.efrc.co.uk/... 

DARCOF 2000. Principles of Organic Farming. Danish Research Centre for Organic Farming, Foulum. 

Parr, J.F., Papendick, R.I. and Youngberg, LG. 1983. Organic farming in the United States principles and perspective. Agro-Ecosystems 8 183-201. 

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