OVICIDAL ACTIVITY OF SIX PLANT LEAF EXTRACTS ON THE EGGS OF CORCYRA CEPHALONICA STAINTON (LEPIDOPTERA : PYRALIDAE)
S.C. DWIVED *
ECO-TOXICOLOGY LABORATORY, DEPARTMENT OF ZOOLQGY, UNIVERSITY OF RAJASTHAN, JAIPUR-302004, INDIA.
ANAND KUMAR *
ECO-TOXICOLOGY LABORATORY, DEPARTMENT OF ZOOLQGY, UNIVERSITY OF RAJASTHAN, JAIPUR-302004, INDIA.
*Author to whom correspondence should be addressed.
Abstract
Leaf extracts of 6 plant species were evaluated for their ovicidal activity against Corcyra cephalonica. At S/10 dose level Vinca rosea shows 40% ovicidal activity followed by Chenopodium album and Helianthus annuus 3 - 4%. At S/100 dose level Withania somnifera exhibit 100% inhibition of hatching whereas Vinca rosea, Cassia occidentalis, Chenopodium album, Argemone mexicana and Helianthus annuus show 96.7%, 86.7%, 70.0%, 23.4% and 23.4% hatching. respectively.