Control ability of extracts from Ajuga plants on some pests

摘要

Several phytoecdysteroids have been found in the extracts of a. multiflora and mulinearifolia using HPLC analysis. Those were 20-OH ecdysone, cyasterone, 3-acetate-20-OH ecdysone, 2-acetate-20-OH ecdysone, ajugalactone. We found out that those phytoecdysteroids could lead the second instar larva of Clostera anastomosis and Stilpnotia candida to death. The modified mortality rate was from 44.64/100 to 96.24/100.