LS - An International Journal of Life Sciences
  • Year: 2018
  • Volume: 7
  • Issue: 2

Bioefficacy of Aqueous Leaf Extracts of Artemisia nilagirica Clarke (Asteraceae) against Red Spider Mite, Oligonychus coffeae (Nietner) (Tetranychidae: Acarina) Infesting Tea

1Senior Zoological Assistant, Zoological Survey of India, Western Regional Centre, Pune, Maharashtra, India

2Deputy Director, Department Tea Research Association, North Bengal Regional R&D Centre, Nagrakata, West Bengal, India

*Corresponding author email id: duraivasanthakumar@gmail.com

Abstract

Aqueous leaf extracts of Artemisia nilagirica were evaluated at three different concentrations (2.5%, 5.0% and 7.5%) against red spider mite infesting tea under laboratory conditions. Results showed that leaf extracts of A. nilagirica at 5.0% and 7.5% concentrations showed 100% mortality of adult red spider mite. A maximum mortality (54%) of red spider mite eggs was noticed at higher concentration (7.5%) of leaf extracts of A. nilagirica.

Keywords

Bioefficacy, Red spider mite, Tea, Artemisia nilagirica