Insecticidal activity of essential oils extracted from aromatic plants against Plutella xylostella (Lepidoptera: Plutellidae) and Myzus persicae (Homoptera: Aphididae)

Wednesday, November 13, 2013: 9:48 AM
Meeting Room 19 B (Austin Convention Center)
Nicoletta Faraone , Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, Canada
G. Christopher Cutler , Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, Canada
Kirk Hillier , Biology, Acadia University, Wolfville, NS, Canada
Gurminder Chahil , Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, Canada
Rachel Rix , Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, Canada
Plant-derived products can play an important role in pest management programs. Essential oils (EOs) from Tanacetum vulgare (Asteraceae) flowers and Artemisia abrotanum (Asteraceae) aerial parts were obtained by hydrodistillation and were evaluated for insecticidal activity against larvae of diamond back moth, Plutella xylostella, and nymphs of green peach aphid, Myzus persicae, by topical application of test solutions on each insect . Both EOs were insecticidal against both insects. Green peach aphid was more susceptible (LD50 0.5 μg/nymph for T. vulgare EOs and LD50 0.3 μg/nymph for A. abrotanum EOs) to both EOs than diamond back moth (LD50 8.3 μg/larva for T. vulgare EOs and LD50 3.7 μg/larva for A. abrotanum EOs). EOs from A. abrotanum exerted the best insecticidal activity against both pests. The results suggest potential for EOs of these two aromatic plants as botanical insecticides against diamondback moth and green peach aphid.