Soil properties, presence of microorganisms, application dose, soil moisture and temperature influence the degradation rate of Allyl isothiocyanate in soil

被引:22
作者
Liu, Jie [1 ]
Wang, Xianli [2 ]
Fang, Wensheng [1 ]
Yan, Dongdong [1 ]
Han, Dawei [1 ]
Huang, Bin [1 ]
Zhang, Yi [1 ]
Li, Yuan [1 ]
Ouyang, Canbin [1 ]
Cao, Aocheng [1 ]
Wang, Qiuxia [1 ]
机构
[1] Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China
[2] Shanghai Acad Agr Sci, Inst Agrifood Stand & Testing Technol, Shanghai 201106, Peoples R China
关键词
Allyl isothiocyanate; Soil; Half-life; Biotic degradation; Environmental factors; Soil characteristics; METHYL-BROMIDE; FUMIGANT DEGRADATION; DECOMPOSITION RATE; TRANSFORMATION; BACTERIAL; BIODEGRADATION; COMMUNITIES; METOLACHLOR; SORPTION; PH;
D O I
10.1016/j.chemosphere.2019.125540
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Allyl isothiocyanate (AITC) is a soil fumigant derived from plants that can effectively control soil-borne diseases. Fully understanding the impact of various factors on its degradation can contribute to its effectiveness against pests and diseases. First, orthogonal design determined the extraction method of AITC in soil, that is using ethyl acetate as the extraction reagent, vortexing for 1 min as the extraction method and holding for 30 min as the method time. Then we studied the effects of soil texture and environmental factors on the rate and extent of AITC degradation in soil. The half-lives of nine origins soils varied from 12.2 to 71.8 h that were affected by the soil's electrical conductivity, available nitrogen, pH and organic matter content. Biotic degradation of AITC contributed significantly (68%-90%) of the total AITC degradation in six soil types. The degradation rate of AITC decreased as the initial dose of AITC increased. The degradation rate of AITC in Suihua soil generally increased with increasing temperature and soil moisture. The effect of temperature on AITC degradation was more pronounced when the soil was moist, which has practical implications for the control of soil pests and diseases. In agricultural soil, the soil's characteristics and environmental factors should be considered when determining the appropriate AITC dose suitable for soil borne disease while at the same time minimizing emissions and impact on the environment. (C) 2019 Elsevier Ltd. All rights reserved.
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页数:8
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