Investigation of single and joint fumigant insecticidal action of citruspeel oil components
1996
Don-Pedro, K.N.
Following gas chromatographic analysis of citruspeel oils, 30 components of these oils were tested against Callosohruchus maculatus (F.). Several compounds (22), including the mayor component of all citruspeel oils--(+)- limonene--were found to be bioactive, having a strong vapour insecticidal activity. These components and some of their isomers were shown to have varying levels of activity (alpha-terpineol, 24-h LC50 4.05 microliters litre-1 to n-tridecane, LC50 13.3 microliters litre-1), but no single component could account for the activity measured for a typical citruspeel oil (lime) on a proportional basis. Joint action studies established that in artificial mixtures several pure components of citruspeel oil potentiated their individual fumigant action in a manner consistent with an additive model against C. maculatus.
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