Fate of the herbicide naproanilide in a rice paddy model ecosystem

The metabolic fate of naproanilide was studied by using a 14C-labelled compound in a rice paddy model ecosystem in the laboratory. Seven metabolites, 2-(2-naphthoxy)propionic acid, methyl-2-(2-naphthoxy)propionate, 2-naphthol, 2, 3-naphthalenediol, 2, 6-naphthalenediol, 2, 7-naphthalenediol, 2-hydro...

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Bibliographic Details
Published in:Journal of Pesticide Science 1992/08/20, Vol.17(3), pp.161-167
Main Authors: WANG, Yei-Shung, HWANG, Kuan-Liang, HSIEH, Yar-Ning, CHEN, Yuh-Lin
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biological and medical sciences
Chemical control
ecosistema
ecosysteme
ecosystems
Fundamental and applied biological sciences. Psychology
herbicidas
herbicide
herbicides
metabolism
metabolisme
metabolismo
modele
modelos
Parasitic plants. Weeds
Phytopathology. Animal pests. Plant and forest protection
Weeds
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Summary:The metabolic fate of naproanilide was studied by using a 14C-labelled compound in a rice paddy model ecosystem in the laboratory. Seven metabolites, 2-(2-naphthoxy)propionic acid, methyl-2-(2-naphthoxy)propionate, 2-naphthol, 2, 3-naphthalenediol, 2, 6-naphthalenediol, 2, 7-naphthalenediol, 2-hydroxy-1, 4-naphthoquinone were identified and two unknown compounds were detected. In a 23-day experiment, 78.1, 7.8 and 1.5% of the total radioactivity were found in the sand, water and biota, respectively. The ecological magnification (EM) values were much smaller and the biodegradability indices (BI) values were much greater than those of persistent chlorinated hydrocarbon insecticides for these biota. Naproanilide seems to be degradable from an evironmental standpoint.
ISSN:0385-1559
1348-589X
1349-0923
DOI:10.1584/jpestics.17.3_161