Disappearance of Azoxystrobin, Pyrimethanil, Cyprodinil, and Fludioxonil on Tomatoes in a Greenhouse

Garau, Valentino; Angioni, Alberto; Real, A. N. A. Aguilera Del; Russo, Mariateresa; Cabras, Paolo

doi:10.1021/jf011219f

Cited by 109 publications

(99 citation statements)

References 6 publications

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“…A constant search for new pesticides is on-going to combat the resistance developed by pests against traditional pesticides. For example, fungicides, such as azoxystrobin, cyprodinil, fludioxonil and pyriproxyfen are relatively new pesticides that have been introduced into the marketplace [1]. However, the fact that agricultural products cannot be sold if they contain pesticides exceeding the residual limit implicates the need for development of methods to effectively eliminate residual pesticides in harvested crops [2,3].…”

Section: Introductionmentioning

confidence: 99%

In-package nonthermal plasma degradation of pesticides on fresh produce

Misra¹,

Pankaj²,

Walsh

et al. 2014

Journal of Hazardous Materials

138

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Keywords: nonthermal plasma, dielectric barrier discharge, pesticide, GC-MS/MS AbstractIn-package nonthermal plasma (NTP) technology is a novel technology for the decontamination of foods and biological materials. This study presents the first report on the potential of the technology for the degradation of pesticide residues. A cocktail of pesticides, namely Azoxystrobin, Cyprodinil, Fludioxonil and Pyriproxyfen was tested on strawberries. The concentrations of these pesticides were monitored in priori and post-plasma treatment using GC-MS/MS. An applied voltage and time dependent degradation of the pesticides was observed for treatment voltages of 60, 70 and 80 kV and treatment durations ranging from 1 to 5 min, followed by 24 h in-pack storage. The electrical characterisation revealed the operation of the discharge in a stable filamentary regime. The discharge was found to generate reactive oxygen and excited nitrogen species as observed by optical emission spectroscopy.

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Section: Introductionmentioning

confidence: 99%

In-package nonthermal plasma degradation of pesticides on fresh produce

Misra¹,

Pankaj²,

Walsh

et al. 2014

Journal of Hazardous Materials

138

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“…Acetone and petroleum ether are the solvents involved in the published journal references [2,3]. And subsequently it was cleaned up using mini chromatographic columns.…”

Section: Results and Discussion Extraction Solventsmentioning

confidence: 99%

“…Because of the systemic activity of azoxystrobin, it was stable in tomato fruits and there is no any decrease under greenhouse conditions. But it is sensible to sunlight, the photodegradation test showed that the waxes had a stronger screen effect compared to the glass, and its t 1/2 is 9.6 h and 0.9 h, respectively [3]. In a greenhouse study, when the tomato leaves was sprayed with homogenous 0.1% aqueous solution of Amistar 250 SC, it was found that the t 1/2 of azoxystrobin was on the average within 13 days [2].…”

Section: Validation In Tomato and Soil Samples Under Field Conditionsmentioning

confidence: 99%

“…China is generally suitable for tomato growing, however, diseases are key factors threatening the tomato production [1]. Therefore, the pesticides involving a shorter preharvest interval (PHI) of seven days or less are needed to protect tomato from plant pathogens, for instance, gray mildew (Phytophtora infestans) and gray mold (Botrytis cinerea) [2,3].…”

Section: Introductionmentioning

confidence: 99%

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Dissipation and Residue of Azoxystrobin in Tomatoes and Soil Using Gas Chromatography with Tandem Mass Spectrometry

Wu¹,

Zhao²,

Yan³

et al. 2016

JRST

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ABSTRACT:The analytical technique for the determination of azoxystrobin in tomato and soil was obtained by gas chromatography with tandem mass spectrometry (GC-MS/ MS), and its dissipation fate was also investigated under field conditions. Azoxystrobin residues in tomato and soil were extracted with ethylacetate+cyclohexane extraction and followed by the dispersive-SPE purification. The average recoveries in tomatoes and soils at different spiked concentrations (0.1, 0.5 and 1.0 mg/kg) ranged from 86.16% to 105.47% with RSDs from 6.8% to 12.3%. The LOD ranged from 0.003 µg/kg to 0.004 µg/kg, and LOQ ranged from 0.009 µg/kg to 0.012 µg/kg. This developed methodology was also used to investigate the residues and dissipation of azoxystrobin in tomatoes and soil under the field conditions. The initial azoxystrobin concentrations in tomato fruits in Henan province and in Zhejiang province were 0.494 mg/kg and 0.638 mg/kg with half-lives of 9.9 days and 11.5 days, respectively. Concentrations were reduced by more than 50% at 10 days after application for both sample sets. Initial azoxystrobin concentrations in soil were 1.747 mg/kg and 1.845 mg/kg in Henan province and in Zhejiang province with half-lives of 8.6 days and 7.7 days, respectively.

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“…Furthermore, Monadjemi et al (2011) estimated half-life of chlorothalonil due to photodegradation at 5.3 days. There are studies indicating high azoxystrobin stability on tomato leaves within 1-4 days after spraying (Szpyrka & Sadło, 2008) and even after 7-10 days on fruits (Garau et al, 2002). Thus chlorothalonil is more susceptible to physical interactions on leaf surfaces than azoxystrobin.…”

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confidence: 99%

Effect of the spray volume adjustment model on the efficiency of fungicides and residues in processing tomato

Ratajkiewicz

Kierzek

Raczkowski

et al. 2016

Span. j. agric. res.

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This study compared the effects of a proportionate spray volume (PSV) adjustment model and a fixed model (300 L/ha) on the infestation of processing tomato with potato late blight (Phytophthora infestans (Mont.) de Bary) (PLB) and azoxystrobin and chlorothalonil residues in fruits in three consecutive seasons. The fungicides were applied in alternating system with or without two spreader adjuvants. The proportionate spray volume adjustment model was based on the number of leaves on plants and spray volume index. The modified Quick, Easy, Cheap, Effective, Rugged, and Safe (QuEChERS) method was optimized and validated for extraction of azoxystrobin and chlorothalonil residue. Gas chromatography with a nitrogen and phosphorus detector and an electron capture detector were used for the analysis of fungicides. The results showed that higher fungicidal residues were connected with lower infestation of tomato with PLB. PSV adjustment model resulted in lower infestation of tomato than the fixed model (300 L/ha) when fungicides were applied at half the dose without adjuvants. Higher expected spray interception into the tomato canopy with the PSV system was recognized as the reasons of better control of PLB. The spreader adjuvants did not have positive effect on the biological efficacy of spray volume application systems. The results suggest that PSV adjustment model can be used to determine the spray volume for fungicide application for processing tomato crop.

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Disappearance of Azoxystrobin, Pyrimethanil, Cyprodinil, and Fludioxonil on Tomatoes in a Greenhouse

Cited by 109 publications

References 6 publications

In-package nonthermal plasma degradation of pesticides on fresh produce

In-package nonthermal plasma degradation of pesticides on fresh produce

Dissipation and Residue of Azoxystrobin in Tomatoes and Soil Using Gas Chromatography with Tandem Mass Spectrometry

Effect of the spray volume adjustment model on the efficiency of fungicides and residues in processing tomato

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