Study on synergic effects of crude extraction of Artemisia scoparia mixed with bacillus thuringiensis against cabbage butterfly larvae
YAO An-qing,HUA Zong-yan(Plant Science and Technology College of Yangtze Uuniversity,Jinghzou 434025,Ch ina)
With soak way, the synergic effects of crude extraction of Artemisia s coparia mixed with bacillus thringiensis was tested against cabbage butterfly la rvae. Result approved:When crude extraction of Artemisia scoparia mixed with bac illus thringiensis as 1∶8.8(according to 1.5×109spores)in the light of equal t oxicity dosage,mass ratio,the synergic effects was most marked,whose co-toxcity coefficient was 208.4;After 72 hr,cabbage butterfly larvae,s death ratio reached 76.3%.
【CateGory Index】： S482.39