Dissipation of difenoconazole in rice, paddy soil, and paddy water under field conditions

Wang, Kai; Wu, Junxue; Zhang, H.Y.

doi:10.1016/j.ecoenv.2012.08.026

Cited by 69 publications

(37 citation statements)

References 18 publications

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“…It has been found that difenoconazole is not easily hydrolyzed or photodegraded (Sweden 2006). However, its halflife has been found to be \10 d in a number of crops (Wang et al 2008;Mukhopadhyay et al 2011;Wang et al 2012), and it has been shown that enzyme-catalyzed reactions in plants are the main causes of its relatively short half-life (Wang et al 2008;FAO 2007). Enzyme activities are affected by temperature.…”

Section: Resultsmentioning

confidence: 99%

Dissipation and Residues of Difenoconazole and Azoxystrobin in Bananas and Soil in Two Agro-Climatic Zones of China

Huan

et al. 2013

Bull Environ Contam Toxicol

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Residues of a fungicide suspension (12 % difenoconazole, 18 % azoxystrobin) in bananas and soil were studied under tropical and subtropical monsoon climates, in Hainan and Yunnan provinces, respectively. The half-lives in bananas were shorter in Hainan (difenoconazole: 8.4-10.7 days; azoxystrobin: 7.8-8.4 days) than Yunnan (difenoconazole: 11.3-13.0 days; azoxystrobin: 10.4-11.6 days), possibly because of the higher temperatures and solar radiation levels in Hainan. The half-lives in soil were shorter in Yunnan (difenoconazole: 15.5-16.7; azoxystrobin: 11.9-13.9 days) than Hainan (difenoconazole: 23.1-23.2 days; azoxystrobin: 16.0-16.1 days), possibly because the organic carbon content was higher and rainfall lower in Yunnan than Hainan. Their physico-chemical properties suggest difenoconazole and azoxystrobin should be stable in bananas and soil, but both decreased to safe concentrations by the minimum harvest time after spraying the mixture at the recommended dosage and 1.5 times that dosage, through physical, chemical, and biological processes.

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Section: Resultsmentioning

confidence: 99%

Dissipation and Residues of Difenoconazole and Azoxystrobin in Bananas and Soil in Two Agro-Climatic Zones of China

Huan

et al. 2013

Bull Environ Contam Toxicol

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“…Plant samples with roots were collected [18,19] and then shelled into rice hull and husked rice. Husked rice was ground to powder.…”

Section: Sampling and Storagementioning

confidence: 99%

Residues and dissipation of guadipyr in rice ecological system

Xue

Guan

et al. 2014

International Journal of Environmental Analytical Chemistry

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“…HerreroHernandez et al (2011) reported the detection of degradation product of tebuconazole in extracts from surface soil samples (0-10 cm) between 19 and 355 days after application. Wang et al (2012) described the half-lives of difenoconazole in paddy soil in Guangxi, Hubei, and Zhejiang were 23.26, 2.82, and 6.61 days, respectively. Under laboratory conditions, Zhang et al (2014) found that the degradation half-lives of tebuconazole varied from 69 to 87 days, depending on the application concentrations.…”

Section: Introductionmentioning

confidence: 98%

Dissipation of the fungicide hexaconazole in oil palm plantation

Maznah

Muhamad

Sahid

et al. 2015

Environ Sci Pollut Res

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Hexaconazole is a potential fungicide to be used in the oil palm plantation for controlling the basal stem root (BSR) disease caused by Ganoderma boninense. Therefore, the dissipation rate of hexaconazole in an oil palm agroecosystem under field conditions was studied. Two experimental plots were treated with hexaconazole at the recommended dosage of 4.5 g a.i. palm(-1) (active ingredient) and at double the recommended dosage (9.0 g a.i. palm(-1)), whilst one plot was untreated as control. The residue of hexaconazole was detected in soil samples in the range of 2.74 to 0.78 and 7.13 to 1.66 mg kg(-1) at the recommended and double recommended dosage plots, respectively. An initial relatively rapid dissipation rate of hexaconazole residues occurred but reduced with time. The dissipation of hexaconazole in soil was described using first-order kinetics with the value of coefficient regression (r (2) > 0.8). The results indicated that hexaconazole has moderate persistence in the soil and the half-life was found to be 69.3 and 86.6 days in the recommended and double recommended dosage plot, respectively. The results obtained highlight that downward movement of hexaconazole was led by preferential flow as shown in image analysis. It can be concluded that varying soil conditions, environmental factors, and pesticide chemical properties of hexaconazole has a significant impact on dissipation of hexaconazole in soil under humid conditions.

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Dissipation of difenoconazole in rice, paddy soil, and paddy water under field conditions

Cited by 69 publications

References 18 publications

Dissipation and Residues of Difenoconazole and Azoxystrobin in Bananas and Soil in Two Agro-Climatic Zones of China

Dissipation and Residues of Difenoconazole and Azoxystrobin in Bananas and Soil in Two Agro-Climatic Zones of China

Residues and dissipation of guadipyr in rice ecological system

Dissipation of the fungicide hexaconazole in oil palm plantation

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