Effect of Reduced Application Rates of Dicofol and Pirimiphos-methyl on Strawberries and Common Beans on Their Residue Content and Crop Production

Residues of dicofol and pirimiphos-methyl applied at different rates on strawberry and common beans, respectively, were monitored at different intervals. The rate of crop production of each rate was also studied. High-performance liquid chromatography was employed to detect both compounds and gas ch...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 1996-11, Vol.44 (11), p.3694-3697
Main Authors: Ahmed, Mohamed Tawfic, Ismail, Saad M. M
Format: Article
Language:English
Subjects:
Biological and medical sciences
Chemical control
CHROMATOGRAPHIE EN PHASE GAZEUSE
COMPOSICION QUIMICA
COMPOSITION CHIMIQUE
Control
CROMATOGRAFIA DE GASES
DICOFOL
DOSE D'APPLICATION
DOSIS DE APLICACION
EGIPTO
EGYPTE
ESPECTROMETRIA DE MASAS
FRAGARIA
FRAGARIA ANANASSA
Fundamental and applied biological sciences. Psychology
HPLC
INSECTICIDAS
INSECTICIDE
MEDICION
MESURE
PHASEOLUS VULGARIS
Phytopathology. Animal pests. Plant and forest protection
PIRIMIFOS METIL
Protozoa. Invertebrates
PYRIMIPHOS METHYL
RENDEMENT DES CULTURES
RENDIMIENTO DE CULTIVOS
RESIDU
RESIDUOS
SPECTROMETRIE DE MASSE
TECHNIQUE ANALYTIQUE
TECNICAS ANALITICAS
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Summary:Residues of dicofol and pirimiphos-methyl applied at different rates on strawberry and common beans, respectively, were monitored at different intervals. The rate of crop production of each rate was also studied. High-performance liquid chromatography was employed to detect both compounds and gas chromatography/mass spectrometry analysis was conducted for further confirmation. All tested rates produced residue levels below the respective maximum residue limits (MRL) of dicofol and pirimiphos-methyl. The highest two rates of dicofol (185 and 139 g of active ingredient/feddan) and of pirimiphos-methyl (750 and 562 g of active ingredient/feddan) produced comparable production rates of strawberry and common beans, respectively. Dicofol residues were 0.230 and 0.105 mg/kg, 1 and 2 weeks, respectively, after the application of the highest rate. The highest rate of pirimiphos-methyl produced a residue level of 0.399 mg/kg, 1 week after application. Keywords: Pirimiphos-methyl; dicofol; strawberry; common beans; HPLC; GC/MS
ISSN:0021-8561
1520-5118
DOI:10.1021/jf950813k