Fate and Transport of Nursery-Box-Applied Tricyclazole and Imidacloprid in Paddy Fields

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 padd...

Full description

Saved in:
Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 2009-09, Vol.202 (1-4), p.3-12
Main Authors: Phong, Thai Khanh, Nhung, Dang Thi Tuyet, Motobayashi, Takashi, Thuyet, Dang Quoc, Watanabe, Hirozumi
Format: Article
Language:English
Subjects:
agricultural runoff
Agriculture
Analytical chemistry
Applied sciences
Atmospheric Protection/Air Quality Control/Air Pollution
Boxes
Climate Change/Climate Change Impacts
Drainage
Earth and Environmental Science
Environment
environmental fate
Environmental monitoring
Exact sciences and technology
Farms
Freshwater
half life
Hydrogeology
Imidacloprid
Insecticides
Irrigation
Kinetics
nursery crops
Oryza sativa
paddy soils
pesticide application
Pesticides
physicochemical properties
Pollution
Rice
Rice fields
Runoff
Sensors
Soil contaminants
Soil Science & Conservation
Soil surfaces
soil transport processes
soil water balance
Soils
Studies
tricyclazole
Water
Water Quality/Water Pollution
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0049-6979
1573-2932
DOI:10.1007/s11270-008-9953-z