Probabilistic assessment of herbicide runoff from Japanese rice paddies: The effects of local meteorological conditions and site-specific water management

Kondo, K., Boulange, J., Phong, T. K., Hiramatsu, K., Inoue, T., & Watanabe, H. (2012) Probabilistic assessment of herbicide runoff from Japanese rice paddies: The effects of local meteorological conditions and site-specific water management. Journal of Pesticide Science, 37(4), pp. 312-322.

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Abstract

Uncertainty assessments of herbicide losses from rice paddies in Japan associated with local meteorological conditions and water management practices were performed using a pesticide fate and transport model, PCPF-1, under the Monte Carlo (MC) simulation scheme. First, MC simulations were conducted for five different cities with a prescribed water management scenario and a 10-year meteorological dataset of each city. The effectiveness of water management was observed regarding the reduction of pesticide runoff. However, a greater potential of pesticide runoff remained in Western Japan. Secondly, an extended analysis was attempted to evaluate the effects of local water management and meteorological conditions between the Chikugo River basin and the Sakura River basin using uncertainty inputs processed from observed water management data. The results showed that because of more severe rainfall events, significant pesticide runoff occurred in the Chikugo River basin even when appropriate irrigation practices were implemented. © Pesticide Science Society of Japan.

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5 citations in Scopus
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5 citations in Web of Science®

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ID Code: 88994
Item Type: Journal Article
Refereed: Yes
Additional Information: Export Date: 11 April 2013
Source: Scopus
Keywords: Herbicide runoff, Monte carlo simulation, Paddy water management, Process-based model, Uncertainty, Variability
DOI: 10.1584/jpestics.D11-058
Divisions: Current > Institutes > Institute of Health and Biomedical Innovation
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 14 Oct 2015 00:12
Last Modified: 25 Oct 2015 23:45

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