Eight plant essential oils were extracted and tested for their efficiency as natural insecticides against the cotton mealybug, P. solenopsis (Tinsley). In-vitro bioassay, contact toxicity of to adult females 2nd instar nymphs was determined. Also, repellence activity tested. The most effective oil female’s after 72 hrs application L. nobilis followed by Apium graveolens, M. longifolia, C. artic...