Antifeedant activity of Melia azedarach (L.) extracts to Diabrotica speciosa (Genn.)(Coleoptera: Chrysomelidae) beetles

Potent limonoid insect antifeedant from Melia azedarach.

Systematic fractionation of a fruit extract from Argentine Melia azedarach L., which was monitored by an insect antifeedant bioassay, led to the isolation of meliartenin, a limonoid antifeedant, which existed as a mixture of two interchangeable isomers. At 4 microg/cm2 and 1 microg/cm2, the isomeric mixture was as active as azadirachtin in strongly inhibiting the larval feeding of Epilachna pae...

Evaluation of Antimicrobial Activity of Different Solvent Extracts of Medicinal Plant: Melia Azedarach L

Antimicrobial efficiency of Melia azedarach L. a medicinal plants (leaf extracts) were examined using Methanol, Ethanol, Petroleum ether and water, as solvents and tested against eight human pathogens like Bacteria: Bacillus cereus, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Fungi: Aspergillus niger, Aspergillus flavus, Fusarium oxisporum, Rhizopus stolonifer using agar we...

Medicinal plant extracts on the control of Diabrotica speciosa (Coleoptera: Chrysomelidae)

The aim of this study was to evaluate the insecticidal effect of aqueous, alcoholic, and oil extracts from leaves of eight medicinal plants against Diabrotica speciosa prepared at five concentrations. The extracts that used commercial soybean oil as solvent showed the highest D. speciosa mortality due to the solvent itself, regardless of the used plants and their concentrations. Thus, commercia...

Melia azedarach Extracts: A Potential Tool for Insect Pest Management

Plant derivatives possessing insect repellent and antifeedant properties could offer an alternative approach for managing crop pests and dealing with insect-transmitted diseases. This chapter summarizes results from studies on insecticidal effects of Melia azedarach extracts from Central Argentina. Extracts from different plant structures (green/ripe fruits, green/senescent leaves) and a variet...

Anti-moulting activity in Brazilian Melia azedarach.