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DOC-trail: 20 years of organic and conventional farming affect soil microbial properties

Oberholzer, H.R.; Mäder, Paul and Fliessbach, Andreas (2000) DOC-trail: 20 years of organic and conventional farming affect soil microbial properties. In: Alföldi, Thomas; Lockeretz, W. and Niggli, Urs (Eds.) Proceedings 13th International IFOAM Scientific Conference, p. 14.

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Summary

In a long-term field trial (DOC; = bio-Dynamic, bio-Organic, Conventional) at Therwil, Switzerland, agricultural production systems have been compared since 1978. The production systems differ mainly in the amount and form of fertiliser and plant protection strategy. Crop rotation and soil tillage were the same. In the most prominent systems soil microbial properties were investigated for the first time after two crop rotations in 1990. In 1998, after 3 crop rotations, soil microbial properties were investigated in all field plots.
Conclusions
Agricultural systems exert distinct effects on chemical and microbiological soil properties, prominently the bio-dynamic system with the application of composted manure. Part of the influence on microbiological parameters appears to be indirect through chemical properties. The differentiation of the systems remained stable for the last eight years of the trial.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Bodenfruchtbarkeit, DOK, soil fertility, DOK-Trial, comparison organic with conventional farming, soil microbial properties
Subjects: Soil > Nutrient turnover
Soil > Soil quality
Environmental aspects > Biodiversity and ecosystem services
Soil > Soil quality > Soil biology
Research affiliation: Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Soil Sciences
Related Links:http://www.fibl.org/forschung/anbautechnik-einjaehrig/index.php
Deposited By: Mäder, Paul
ID Code:2933
Deposited On:27 Jun 2004
Last Modified:12 Apr 2010 07:29
Document Language:English
Status:Published
Refereed:Not peer-reviewed

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