నైరూప్య

Evaluation of Insecticidal activity of selected medicinal plants against Tetranychus urticae (Mites)

Gowri. S, Meena Chandran*

Aqueous extract of some selected medicinal plants Allium sativum, Zingiber officinale, Capsicum annuum and Azadirachta indica were evaluated for their insecticidal activity against on two spotted mites Tetranychus urticae, which is a pest that causes serious damage to several plants. Propargite was used as a standard for insecticidal activity and percentage mortality was found to be 100%. All individual extracts exhibited concentration and time dependent insecticidal activity. The formulation consists of equal ratio of extracts of Allium sativum, Zingiber officinale, Capsicum annuum and Azadirachta indica showed a high toxicological effect, producing 90% mortality after 72 hours. Results clearly indicates that the formulation of Allium sativum, Zingiber officinale, Capsicum annuum and Azadirachta indica can be used as an effective agent for the control of two spotted mites Tetranychus urticae and it could be tested against other pest affecting crops throughout the world there by reducing use of synthetic pesticides