• D. Bhavani
• Dr. M.S. Nalina Sundari

Insects dominate all terrestrial environments that support human life. They are the most important competitors for food, fiber and other natural resources. They consume or destroy around 10% of gross national product in large industrialized nation and upto 25% of gross national product in some developing countries. Neem botanically known as Azadirachta indica belonging to the family Meliaceae, is a plant, well known in India, Pakistan and some African countries for its insect control properties. It is proved to be an important agent for battling insects. Pericallia ricini is a major pest of agriculture. The infested plants exhibit severe crumpling of the leaves. Based upon the fact that plant alkaloids leave no residues in the environment, the present study was aimed to investigate the impact of different concentrations of the extract of Azadirachtin on the biology of P. ricini. Significant reduction in the protein content of the body tissues P. ricini was observed due to their exposure to the extract of Azadirachtin. Moreover, the extract was mixed with certain synthetic insecticides and the synergistic studies were also carried out.

Pericallia ricini, Azadirachtin , synthetic insecticides

"COMPARATIVE STUDIES ON EFFICACY OF AZADIRACHTIN, A PLANT DERIVED PESTICIDE AND CYPERMETHRIN, A SYNTHETIC PESTICIDE ON THE CONTROL OF PERICALLIA RICINI [FABRICIUS 1775] ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 1, page no.2069-2074, January-2019, Available :http://www.jetir.org/papers/JETIR1901D92.pdf

"COMPARATIVE STUDIES ON EFFICACY OF AZADIRACHTIN, A PLANT DERIVED PESTICIDE AND CYPERMETHRIN, A SYNTHETIC PESTICIDE ON THE CONTROL OF PERICALLIA RICINI [FABRICIUS 1775] ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 1, page no. pp2069-2074, January-2019, Available at : http://www.jetir.org/papers/JETIR1901D92.pdf