Behavior of sprayed tricyclazole in rice paddy lysimeters

Phong, Thai Khanh, Dang, Dang Thi Tuyet, Yamazaki, Kenichi, Takagi, Kazuhiro and Watanabe, Hirozum (2009) Behavior of sprayed tricyclazole in rice paddy lysimeters. Chemosphere, 74 8: 1085-1089. doi:10.1016/j.chemosphere.2008.10.050

Author Phong, Thai Khanh
Dang, Dang Thi Tuyet
Yamazaki, Kenichi
Takagi, Kazuhiro
Watanabe, Hirozum
Title Behavior of sprayed tricyclazole in rice paddy lysimeters
Journal name Chemosphere   Check publisher's open access policy
ISSN 0045-6535
Publication date 2009-02
Sub-type Article (original research)
DOI 10.1016/j.chemosphere.2008.10.050
Volume 74
Issue 8
Start page 1085
End page 1089
Total pages 5
Place of publication Oxford, United Kingdom
Publisher Pergamon
Language eng
Abstract The behavior of sprayed tricyclazole in rice paddy lysimeters was studied. Tricyclazole residues were measured from rice leaves and paddy water after tricyclazole spraying in paddy lysimeters. The rate of photolysis and hydrolysis of tricyclazole on the surface of rice leaves was also determined in a laboratory experiment. Tricyclazole was extracted from leaf and water samples and determined by liquid chromatography with UV or mass spectrometry. The hydrolysis half-lives of tricyclazole on rice leaves were 11.9 and 5.1 d for the formulated product and standard, respectively. The photolysis half-lives were longer, 16.4 d for the formulated product and 20.9 d for the standard. In the paddy lysimeter, tricyclazole dissipation on leaves involved either biphasic first-order kinetics or single-phase first-order kinetics, depending on the rainfall pattern. Half-lives of tricyclazole on lysimeter rice leaves were from 3.0 to 5.7 d. The dissipation of tricyclazole in paddy water followed single-phase first-order kinetics with half-lives ranging from 2.1 to 5.0 d.
Keyword Photolysis
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Available online 4 December 2008.

Document type: Journal Article
Sub-type: Article (original research)
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National Research Centre for Environmental Toxicology Publications
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