Fate and transport of nursery-box-applied tricyclazole and imidacloprid in paddy fields

Phong, Thai Khanh, Nhung, Dang Thi Tuyet, Motobayashi, Takashi, Thuyet, Dang Quoc, & Watanabe, Hirozumi (2009) Fate and transport of nursery-box-applied tricyclazole and imidacloprid in paddy fields. Water, Air, and Soil Pollution, 202(1), pp. 3-12.

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The fate and transport of tricyclazole and imidacloprid in paddy plots after nursery-box application was monitored. Water and surface soil samples were collected over a period of 35 days. Rates of dissipation from paddy waters and soils were also measured. Dissipation of the two pesticides from paddy water can be described by first-order kinetics. In the soil, only the dissipation of imidacloprid fitted to the simple first-order kinetics, whereas tricyclazole concentrations fluctuated until the end of the monitoring period. Mean half-life (DT50) values for tricyclazole were 11.8 and 305 days, respectively, in paddy water and surface soil. The corresponding values of imidacloprid were 2.0 and 12.5 days, respectively, in water and in surface soil. Less than 0.9% of tricyclazole and 0.1% of imidacloprid were lost through runoff during the monitoring period even under 6.3 cm of rainfall. The pesticide formulation seemed to affect the environmental fate of these pesticides when these results were compared to those of other studies.

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ID Code: 89015
Item Type: Journal Article
Refereed: Yes
Keywords: Dissipation, Imidacloprid, Nursery box, Paddy fields, Tricyclazole
DOI: 10.1007/s11270-008-9953-z
ISSN: 1573-2932
Divisions: Current > Institutes > Institute of Health and Biomedical Innovation
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 14 Oct 2015 01:58
Last Modified: 23 Oct 2015 01:32

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