Soil bacterial functional diversity as influenced by organic amendment application

The aim of the present work was to assess the response of microbial functional diversity to organic soil amendment and the relationship between the microbial functional diversity and soil carbon availability. Household solid waste compost, horse and rabbit manure and chicken manure were applied at t...

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Bibliographic Details
Published in:Bioresource technology 2006-09, Vol.97 (13), p.1484-1489
Main Authors: Gomez, E., Ferreras, L., Toresani, S.
Format: Article
Language:English
Subjects:
Agriculture - methods
Agronomy. Soil science and plant productions
Bacteria
Bacteria - classification
Bacteria - genetics
Bacteria - isolation & purification
Biolog EcoPlate
Biological and medical sciences
Carbon - isolation & purification
Community level physiological profiles
Fertilizers - analysis
Fertilizers - microbiology
Fundamental and applied biological sciences. Psychology
General agronomy. Plant production
Genetic Variation
Manure - analysis
Manure - microbiology
Microbial diversity
Organic amendments
Other nutrients. Amendments. Solid and liquid wastes. Sludges and slurries
Soil - analysis
Soil Microbiology
Soil-plant relationships. Soil fertility. Fertilization. Amendments
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Summary:The aim of the present work was to assess the response of microbial functional diversity to organic soil amendment and the relationship between the microbial functional diversity and soil carbon availability. Household solid waste compost, horse and rabbit manure and chicken manure were applied at two doses. The same undisturbed soil type (Vertic Argiudoll) was used as reference. Soil suspensions were applied to Biolog EcoPlate™ and average color development (AWCD), richness ( R) and Shannon–Weaver index ( H) were calculated. The amendment incorporation resulted in significant increases ( p < 0.05) in AWCD, R and H compared to the unamended plots. The regression functions showed linear relationships when R and H were related to soil organic carbon ( R 2 = 0.77 and 0.72, respectively). Principal component analysis allowed the differentiation of treatments from the control and the undisturbed sites. The Biolog EcoPlate assay was sensitive to changes in the short term due to management practices.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2005.06.021