Techno-economic state of the art on organic fertilisers production and assessment of basic knowledge on soil fertility conservation.
Participants from France, UK, Italy, Spain, Brasil and Denmark have contributed with national reports along the pattern:
1. Soil fertility;
2. Production of organic fertilisers;
4. National activities;
5. Environmental impact;
6. European standards and analytical methods.
INRA, Bordeaux, France acted as scientific coordinator and summarised the national contributions in a final report issued 91.02.27.