Sorption, desorption and mobility characteristics of a novel fungicide pyrazoxystrobin in three agricultural soils

Liu Xunyue; Ding Xingcheng

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Sorption, desorption and mobility characteristics of a novel fungicide pyrazoxystrobin in three agricultural soils

Liu Xunyue 1,Ding Xingcheng 2 * #

1.Institute of Nuclear Agricultural Sciences, Zhejiang University, HangZhou 310029

2.Institute of Nuclear Agricultural Sciences, Zhejiang Univeristy, Hangzhou, 310029

*Correspondence author

#Submitted by

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Funding: Specialized Research Fund for the Doctoral Program of Higher Education（No.200803351010）

Opened online:14 February 2012

Accepted by: none

Citation: Liu Xunyue,Ding Xingcheng.Sorption, desorption and mobility characteristics of a novel fungicide pyrazoxystrobin in three agricultural soils[OL]. [14 February 2012] http://en.paper.edu.cn/en_releasepaper/content/4463029

Pyrazoxystrobin, (E)-methyl 2-(3-((3-(4-chlorophenyl)-1-methyl- 1H -pyrazol-5-yloxy) methyl) phenyl) -3 - methoxyacrylate, is a novel fungicide developed in China. The adsorption, desorption and mobility characteristics of pyrazoxystrobin on three agricultural soils were studied by using 14C labeled compound. The adsorption of pyrazoxystrobin in soils was correlated to soil organic matter content and soil pH and the sorption has been observed in the order of S2>S1>>S3. Desorption was reflect some of the interactions involved between the pesticides and the soil components, soil pH seems to more influence to pyrazoxystrobin desorption and only about 2.54 to 6.41% of adsorbed pyrazoxystrobin was released. The mobility result, minimum of 95.02% compound residued in the upper 4.0 cm layer, demonstrated the use of pyrazoxystrobin as a fungicide is likely to be safe to groundwater.

Keywords:Fungicide; Pyrazoxystrobin; Agricultural soils; Sorption; Desorption; Mobility behavior

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