Send to:

Choose Destination
See comment in PubMed Commons below
Science. 2002 May 31;296(5573):1694-7.

Soil fertility and biodiversity in organic farming.

Author information

  • 1Research Institute of Organic Agriculture, Ackerstrasse, CH-5070 Frick, Switzerland.


An understanding of agroecosystems is key to determining effective farming systems. Here we report results from a 21-year study of agronomic and ecological performance of biodynamic, bioorganic, and conventional farming systems in Central Europe. We found crop yields to be 20% lower in the organic systems, although input of fertilizer and energy was reduced by 34 to 53% and pesticide input by 97%. Enhanced soil fertility and higher biodiversity found in organic plots may render these systems less dependent on external inputs.

[PubMed - indexed for MEDLINE]
Free full text
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire
    Loading ...
    Write to the Help Desk