Efficacy of Botanicals from the Meliaceae and Piperaceae

Efficacy trials were undertaken with Meliaceae and Piperaceae botanicals against corn leaf aphid and European earwigs. Piperaceae botanicals were most active aginst earwigs because of their knockdown effect while Meliaceae botanicals were more effective against corn leaf aphids in field trials. New tropical American botanicals were found to have comparable efficacy to established Asian and African botanicals. In trials with European corn borer or mosquito larvae, the efficacy was improved by the addition of an all natural synergist, dillapiol, or the repellent, linalol.