Simulation of pesticide behavior in a paddy block by a pesticide fate and transport model

Thai Khanh Phong, Kazuaki Hiramatsu, Son Hong Vu, Satoru Ishihara, Hirozumi Watanabe

研究成果: ジャーナルへの寄稿記事

4 引用 (Scopus)

抄録

A simulation model (PCPF-B) was developed based on the PCPF-1 model to predict the runoff of pesticides from paddy plots to a drainage canal in a paddy block. The block-scale model now comprises three modules: (1) a module for pesticide application, (2) a module for pesticide behavior in paddy fields, and (3) a module for pesticide concentration in the drainage canal. The PCPF-B model was first evaluated by published data in a single plot and then was applied to predict the concentration of bensulfuron-methyl in one paddy block in the Sakura river basin, Ibaraki, Japan, where a detailed field survey was conducted. The PCPF-B model simulated well the behavior of bensulfuron-methyl in individual paddy plots. It also reflected the runoff pattern of bensulfuron-methyl at the block outlet, although overestimation of bensulfuronmethyl concentrations occurred due to uncertainty in water balance estimation. Application of water management practice such as water-holding period and seepage control also affected the performance of the model. A probabilistic approach may be necessary for a comprehensive risk assessment in large-scale paddy areas.

元の言語英語
ページ(範囲)505-512
ページ数8
ジャーナルJournal of the Faculty of Agriculture, Kyushu University
54
発行部数2
出版物ステータス出版済み - 10 1 2009

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fate and transport models
Pesticides
paddies
pesticides
bensulfuron-methyl
Water
Drainage
drainage channels
Practice Management
runoff
Rivers
Uncertainty
Japan
seepage
water management
water balance
pesticide application
risk assessment
simulation models
uncertainty

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Agronomy and Crop Science

これを引用

Simulation of pesticide behavior in a paddy block by a pesticide fate and transport model. / Phong, Thai Khanh; Hiramatsu, Kazuaki; Vu, Son Hong; Ishihara, Satoru; Watanabe, Hirozumi.

:: Journal of the Faculty of Agriculture, Kyushu University, 巻 54, 番号 2, 01.10.2009, p. 505-512.

研究成果: ジャーナルへの寄稿記事

Phong, Thai Khanh ; Hiramatsu, Kazuaki ; Vu, Son Hong ; Ishihara, Satoru ; Watanabe, Hirozumi. / Simulation of pesticide behavior in a paddy block by a pesticide fate and transport model. :: Journal of the Faculty of Agriculture, Kyushu University. 2009 ; 巻 54, 番号 2. pp. 505-512.
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