Fungi in Danish soils under organic and conventional farming

A multi-soil study was conducted in Denmark including 29 sites, 8 classified as ‘organic’, 11 as ‘conventional with manure and synthetic fertilisers’ and 10 as ‘conventional with synthetic fertilisers’. The variability of fungal abundance within the three farming systems and the long-term effects of...

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Bibliographic Details
Published in:Agriculture, ecosystems & environment ecosystems & environment, 2005-05, Vol.107 (1), p.65-73
Main Authors: Elmholt, Susanne, Labouriau, Rodrigo
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biochemistry and biology
Bioindicator
Biological and medical sciences
Chemical, physicochemical, biochemical and biological properties
Farming system
Fundamental and applied biological sciences. Psychology
Generalized-linear-mixed models
Gliocladium roseum
Microbiology
Penicillium
Physics, chemistry, biochemistry and biology of agricultural and forest soils
Poisson-mixed regression
Soil science
Trichoderma
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Summary:A multi-soil study was conducted in Denmark including 29 sites, 8 classified as ‘organic’, 11 as ‘conventional with manure and synthetic fertilisers’ and 10 as ‘conventional with synthetic fertilisers’. The variability of fungal abundance within the three farming systems and the long-term effects of different farming systems on fungal propagules in soil were evaluated. Fungal abundance showed large variations within all three farming systems and this variability reduced the possibility to obtain general conclusions on fungal composition in soils under different farming systems. This was illustrated by the results on total propagule numbers of filamentous fungi and yeasts. Penicillium spp. and Gliocladium roseum were more abundant under organic than conventional farming, while Trichoderma spp. were most abundant in conventionally farmed soils with synthetic fertilisers. These results were not altered after adjusting for possible differences in basic soil properties like total C and N, extractable P, CEC, base saturation and soil density. The paper discusses whether the differences in fungal abundance are characteristics of a farming system itself or associated with certain management factors being more prevalent in one farming system than the other.
ISSN:0167-8809
1873-2305
DOI:10.1016/j.agee.2004.09.009