摘要：This study was carried out to determine the persistency and safety of emulsifiableconcentrate (EC) and wettable powder (WP) formulations of Tephrosia vogelii and Piperaduncum (1:5) against natural enemies and broccoli leaves (phytotoxic effects) as well asto assess their effectiveness against Crocidolomia pavonana in field. EC and WPformulations were safe to parasitoid Eriborus argenteopilosus and did not cause anyphytotoxic effects on broccoli leaves. Persistency of EC and WP formulations werelower than bio-insecticide Bacillus thuringiensis (BT) and sythetic pesticide with activeingredient deltametrin. The mortality of C. pavonana treated with EC and WPformulations reached 100%, while BT and deltametrin only reached 73.33% and 88.33%respectively, at the first day treatment. The effectiveness of extracts were declinedsharply at one day after treatment indicating low persistence of formulation. In field, ECand WP formulations suppressed the population of C. pavonana more than 80%compared to control. Both formulations showed better activity compared to syntheticinsecticide deltametrin.
