DICHLORVOS AND PHOSPHAMIDON INDUCED TOXCITY AGAINST ONTOGENY OF RICE MOTH CORCYRA CEPHALONICA STAINT. (LEPIDOPTERA : PYRALIDAE)
S.K. TIWARI *
DEPARTMENT OF ZOOLOGY, UNIVERSITY OF GORAKHPUR, GORAKHPUR — 273009, INDIA.
R.S. BHATT *
DEPARTMENT OF ZOOLOGY, UNIVERSITY OF GORAKHPUR, GORAKHPUR — 273009, INDIA.
*Author to whom correspondence should be addressed.
Abstract
Larvicidal and pupicidal effects of dichlorvos and phosphamidon (O.P. compounds) were made on the third instar larval stages of Corcyra cephalonica Staint. The results revealed that diet containing 0.018% (a.i.) V/w of dichlorvos and 0.02% (a.i.) v/w of phosphamidon caused 100% larval mortality indicating absolute toxicity to the pest. Dichlorvos is slightly more toxic in comparison to phosphamidon.