| Pesticide degradation in a 'biobed' composting substrate. | |
| | |
MedLine Citation:
|
PMID: 12741520 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Pesticides play an important role in the success of modern farming and food production. However, the release of pesticides to the environment arising from non-approved use, poor practice, illegal operations or misuse is increasingly recognised as contributing to water contamination. Biobeds appear to offer a cost-effective method for treating pesticide-contaminated waste. This study was performed to determine whether biobeds can degrade relatively complex pesticide mixtures when applied repeatedly. A pesticide mixture containing isoproturon, pendimethalin, chlorpyrifos, chlorothalonil, epoxiconazole and dimethoate was incubated in biomix and topsoil at concentrations to simulate pesticide disposal. Although the data suggest that interactions between pesticides are possible, the effects were of less significance in biomix than in topsoil. The same mixture was applied on three occasions at 30-day intervals. Degradation was significantly quicker in biomix than in topsoil. The rate of degradation, however, decreased with each additional treatment, possibly due to the toxicity of the pesticide mixture to the microbial community. Incubations with chlorothalonil and pendimethalin carried out in sterile and non-sterile biomix indicated that degradation, rather than irreversible adsorption to the matrix, was the main mechanism responsible for the reduction in recovered residues. Results from these experiments suggest that biobeds offer a viable means of treating pesticide waste. |
| | |
Authors:
|
Paul Fogg; Alistair B A Boxall; Allan Walker; Andrew A Jukes |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Pest management science Volume: 59 ISSN: 1526-498X ISO Abbreviation: Pest Manag. Sci. Publication Date: 2003 May |
Date Detail:
|
Created Date: 2003-05-13 Completed Date: 2003-12-05 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 100898744 Medline TA: Pest Manag Sci Country: United States |
Other Details:
|
Languages: eng Pagination: 527-37 Citation Subset: IM |
Affiliation:
|
Cranfield Centre for EcoChemistry, Shardlow Hall, Shardlow, Derby, DE72 2GN, UK. p.fogg@cranfield.ac.uk |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Biodegradation, Environmental Kinetics Pesticides / metabolism* Soil / analysis* Soil Pollutants / metabolism* Time Factors Water Pollution / prevention & control |
| Chemical | |
Reg. No./Substance:
|
0/Pesticides; 0/Soil; 0/Soil Pollutants |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Evaluation of probabilistic risk assessment of pesticides in the UK: chlorpyrifos use on top fruit.
Next Document: Contribution of contact toxicity and wheat condition to mortality of stored-product insects exposed ...