Journal article
Ageing of atrazine in manure amended soils assessed by bioavailability to Pseudomonas sp. strain ADP
Geological Survey of Denmark and Greenland1
Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark2
Center for Biological Sequence Analysis, Department of Systems Biology, Technical University of Denmark3
Metagenomics, Center for Biological Sequence Analysis, Department of Systems Biology, Technical University of Denmark4
University of Copenhagen5
Animal manure is applied to agricultural land in areas of high livestock production. In the present study, we evaluated ageing of atrazine in two topsoils with and without addition of manure and in one subsoil. Ageing was assessed as the bioavailability of atrazine to the atrazine mineralizing bacteria Pseudomonas sp. strain ADP.
Throughout an ageing period of 90 days bioavailability was investigated at days 1, 10, 32, 60 and 90, where ~108 cells g−1 of the ADP strain was inoculated to the 14C-atrazine exposed soil and 14CO2 was collected over 7 days as a measure of mineralized atrazine. Even though the bioavailable residue decreased in all of the three soils as time proceeded, we found that ageing occurred faster in the topsoils rich in organic carbon than in subsoil.
For one topsoil rich in organic carbon content, Simmelkær, we observed a higher degree of ageing when treated with manure. Contrarily, sorption experiments showed less sorption to Simmelkær treated with manure than the untreated soil indicating that sorption processes are not the only mechanisms of ageing.
The other topsoil low in organic carbon content, Ringe, showed no significant difference in ageing between the manure-treated and untreated soil. The present study illustrates that not simply the organic carbon content influences adsorption and ageing of atrazine in soil but the origin and composition of organic matter plays an important role.
Language: | English |
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Publisher: | Springer Netherlands |
Year: | 2014 |
Pages: | 217-225 |
ISSN: | 15729729 and 09239820 |
Types: | Journal article |
DOI: | 10.1007/s10532-013-9654-1 |
ORCIDs: | 0000-0002-6118-9949 and 0000-0001-9680-1715 |
Ageing Aging Animal manure Atrazine Bioavailability Biodegradation, Environmental Biomedical and Life Sciences Geochemistry Herbicides Life Sciences Manure Microbiology Pseudomonas Soil Soil Microbiology Soil Science & Conservation Sorption Terrestrial Pollution Triazine Waste Management/Waste Technology Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution