Obbard, J. P. and Jones, Kevin C. (2001) Measurement of 15-N-dilution in nitrogen-fixing leguminous host-plants grown in heavy metal-contaminated soils amended with sewage sludge. Environmental Pollution, 111 (2). pp. 311-320. ISSN 0269-7491Full text not available from this repository.
Rates of nitrogen fixation by Rhizobium in symbiosis with leguminous host-plants including white clover, broad bean and peas have been established in soils that have been amended experimentally with heavy metal-contaminated sewage sludges. Results from 15N-dilution experiments for the measurement of N2 fixation have shown that adverse heavy metal effects are apparent on symbiotic N2 fixation rates for white clover grown in inter-specific competition with ryegrass under mixed sward conditions, compared to white clover grown in pure sward. Further experiments on broad bean and pea indicated a significant, but minor-inhibitory metal-related effect on the rate of N2 fixation compared to untreated soils and soils amended with a relatively uncontaminated sludge. The implications of the results with respect to sludge utilisation in agriculture are discussed.
|Journal or Publication Title:||Environmental Pollution|
|Uncontrolled Keywords:||Nitrogen fixation ; Rhizobium ; Metal contamination ; Soils ; Sewage sludge|
|Subjects:||G Geography. Anthropology. Recreation > GE Environmental Sciences|
|Departments:||Faculty of Science and Technology > Lancaster Environment Centre|
|Deposited On:||21 Jan 2009 15:21|
|Last Modified:||08 Dec 2016 01:28|
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