Authors: M Govindarajan A Jebanesan T Pushpanathan
Publish Date: 2007/11/08
Volume: 102, Issue: 2, Pages: 289-292
Abstract
Methanolic leaf extract of Cassia fistula was tested for larvicidal and ovicidal activity against Culex quinquefasciatus and Anopheles stephensi The extract was found to be more lethal to the larvae of A stephensi than C quinquefasciatus with LC50 values of 1797 and 2057 mg/l respectively Mean percent hatchability of the ovicidal activity was observed 120 h after treatment The percent hatchability was inversely proportional to the concentration of extract and directly proportional to the eggs The egg raft of C quinquefasciatus was found to be more hatchable than A stephensi The results show that the leaf extract of C fistula is promising as a larvicidal and ovicidal agent against C quinquefasciatus and A stephensi
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