Behavior of nursery-box-applied imidacloprid in micro paddy lysimeter

Thuyet, Dang Quoc, Watanabe, Hirozumi, Takagi, Kazuhiro, Yamazaki, Kenichi and Nhung, Dang Thi Tuyet (2012) Behavior of nursery-box-applied imidacloprid in micro paddy lysimeter. Journal of Pesticide Science, 37 1: 20-27. doi:10.1584/jpestics.G11-19


Author Thuyet, Dang Quoc
Watanabe, Hirozumi
Takagi, Kazuhiro
Yamazaki, Kenichi
Nhung, Dang Thi Tuyet
Title Behavior of nursery-box-applied imidacloprid in micro paddy lysimeter
Journal name Journal of Pesticide Science   Check publisher's open access policy
ISSN 1348-589X
1349-0923
Publication date 2012-01
Sub-type Article (original research)
DOI 10.1584/jpestics.G11-19
Open Access Status DOI
Volume 37
Issue 1
Start page 20
End page 27
Total pages 8
Place of publication Tokyo, Japan
Publisher Pesticide Science Society of Japan
Collection year 2013
Language eng
Formatted abstract
A micro paddy lysimeter (MPL) was employed to monitor the behavior of nursery-box-applied imidacloprid granules in the rice paddy environment using two treatment methods, i.e. before transplanting (BT) and at sowing (AS). Tested application rates were three-fold the recommended rate. Under a water management scenario in an actual field, the behavior of nursery-box-applied imidacloprid granules in paddy water and paddy soil in MPL was comparable with field monitoring data in the literature. Imidacloprid concentration in water peaked at 189±36 μg/L and 13.1±1.4 μg/L at 1 day after transplanting (DAT), and the half-lives (DT50) were 2.5 days, and 4.7 days for BT and AS treatments, respectively. In the soil profile, the maximum concentration of imidacloprid at 21 DAT was 65.6±0.4 μg/kg and 39.7±4.9 μg/kg in the 0–2.5 cm layer in the inter-row zone for BT and AS treatments, respectively. Imidacloprid was found in the 12.5–15.0 cm layer at 3.2±0.7 μg/kg for BT treatment and 13.7±3.8 μg/kg for AS treatment, in the inter-row zone. In AS treatment, imidacloprid mainly stayed in the root zone (0–5 cm surface soil layer), and its concentration was 895±4 μg/kg at 21 DAT. MPL presented as a convenient and alternative tool to monitor the behavior of nursery-box-applied pesticide in the rice paddy environment.
Keyword Micro paddy lysimeter
Imidacloprid
Nursery-box
Monitoring
Paddy field
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Released online 6 January 2012.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Pharmacy Publications
 
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