Residues of fungicides on greenhouse lettuce

Meloni, Mauro; Pirisi, Filippo M.; Cabras, Paolo; Cabitza, Franco

doi:10.1021/jf00122a002

Cited by 14 publications

(7 citation statements)

References 3 publications

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“…These authors reported an accumulation effect of fungicide residues, due to repeated applications of the same active ingredient (a.i.). The same effect has been observed on greenhouse-grown lettuce (Meloni et al, 1984; Dejonckheere et al, 1982) and on field-grown grapes and tomatoes (Cabras et al, 1982a,b) as well as with pesticides belonging to different chemical families.…”

supporting

confidence: 62%

“…From these data it is evident that repeated spraying of benalaxyl and furalaxyl produced the accumulation effect already observed on tomatoes with other fungicides and insecticides (Vanachter et al, 1979;Cabras et al, 1982a,b) and on lettuce (Dejonckheere et al, 1982;Foschi et al, 1983; Meloni et al, 1984). Such an effect is well indicated "Residue values (ppm) are the means of four replicated analyses and were statistically treated (P < 0.05).…”

Section: Resultsmentioning

confidence: 57%

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Behavior of acylanilide and dicarboximidic fungicide residues on greenhouse tomatoes

Cabras¹,

Meloni²,

Pirisi³

et al. 1985

J. Agric. Food Chem.

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supporting

confidence: 62%

Section: Resultsmentioning

confidence: 57%

Behavior of acylanilide and dicarboximidic fungicide residues on greenhouse tomatoes

Cabras¹,

Meloni²,

Pirisi³

et al. 1985

J. Agric. Food Chem.

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“…There are many documented reports of high residues of pesticides in crops grown in greenhouse, viz. high residues of lufenuron in Chinese cabbage (Khay et al ., ), fenpropathrin in tomatoes and green beans (Martínez Galera et al ., ), fungicides, thiram, cymoxanil, benomyl, vinclozolin and benzimidazolecarbamate methyl ester in greenhouse lettuce (Meloni et al ., ). The results obtained in the present study indicated high persistence of acephate and its methamidophos metabolite in PH as compared to that in OF.…”

Section: Resultsmentioning

confidence: 97%

Residues of pesticides acephate and methamidophos in capsicum grown in greenhouse and open field

Sharma

Hebbar

Divakara

et al. 2012

Quality Assurance and Safety of Crops & Foods

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Introduction Capsicum grown in low-cost polyhouses (a protective shade made up of polythene used for growing high-value agricultural products) is often infested by thrips and acephate is an insecticide, which is frequently and repeatedly used for controlling this pest. Objectives Since a polyhouse microclimate is different from that of an open field, a study was carried out to compare the decline pattern of acephate residues in capsicum grown in polyhouse to that grown in open field. Methods Laboratory standardized methodologies using gas liquid chromatography was adopted to estimate residues of acephate and its metabolite, methamidophos in capsicum fruits. Results and Conclusion Higher initial residues (0.39 ppm) and persistence of acephate (pre-harvest interval = 16 days) and its methamidophos metabolite was detected in capsicum grown in polyhouse as compared to that grown in open field (pre-harvest interval = 12 days) in spite of higher rate of growth and consequent residue 'dilution' in polyhousegrown capsicum.

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“…Potential exposure to pesticides of applicators and workers is considerably more important in greenhouse conditions because of higher airborne concentrations and more chance of contact to pesticide treated foliage than outdoors. Another problem is the longer persistence of some pesticides in greenhouse environment [1] which leads to high residue levels in food products, even when the safety times have been accurately respected. The knowledge of dissipation behaviour of greenhouse applied pesticides is thus extremely important in defining the work reentry period and the safety intervals.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of the dissipation of triadimefon in greenhouse and field conditions

Silva

1998

Toxicological & Environmental Chemistry

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The dissipation of triadimefon, {1-(4-chlorophenoxy)-3,3-dimethyl-1-(1H-1,2,4-triazol-l-yl)butanone}, was studied after its application to melon leaves, glass and paper, both in greenhouse and field conditions. The dissipation rate of triadimefon in its commercial formulation Bayleton 5 was found to be lower in greenhouse than field. The results for different samples in the same conditions show that the dissipation of triadimefon was found to be biphasic. This result can be accounted by a semi-empirical model which assumes an initial fast decline of the dissipation rate, attributed to an exponential decay of the volatilization rates, followed by a second phase where the dissipation is due to a first order degradation processes.

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Residues of fungicides on greenhouse lettuce

Cited by 14 publications

References 3 publications

Behavior of acylanilide and dicarboximidic fungicide residues on greenhouse tomatoes

Behavior of acylanilide and dicarboximidic fungicide residues on greenhouse tomatoes

Residues of pesticides acephate and methamidophos in capsicum grown in greenhouse and open field

Comparative study of the dissipation of triadimefon in greenhouse and field conditions

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