General Principles

The aim of biodynamic fertility management is to generate a farm’s fertility from within the farming system itself, rather than from importing inputs from outside. This generally involves the recycling of raw organic materials generated on the farm with the goal of developing soil humus and the related biological activity.

Compost  - Applied N and P - Livestock - Imported Fertility - Fertility Materials

Examples of self-sustaining fertility dynamics include:

  • Use of legumes in crop rotation (pulls nitrogen from the air and incorporates it into the farm’s fertility cycle; helps to mobilize phosphorous; builds soil humus)
  • Recycling livestock manures via composting and pasture management (concentrates numerous crop nutrients/minerals and recycles them back into the farm; builds soil humus)
  • Green manure plough down crops (builds soil humus; supplies concentrated levels of various crop nutrients)
  • Care in planning crop rotation (avoids excessive and continual loss of the same crop nutrient in levels that can exceed the farm’s ability to replenish)
  • Increasing biological activity of soil by adding useful microorganisms
  • Use of the Biodynamic compost preparations and horn manure (Preparation 500 – orchestrates and stimulates living processes)

Note: This is an excerpt of "Biodynamic Farm Standard (2010). Demeter Association Inc."