Abstract
The hiotoxieity analysis of crystal protein of some Bacillus thuring,enstv strains has been carried out against the larvae a red (lour beetle. Trihohum ,,eisfentann (Ilerhst). Seven isolates found !light!, active against T. CUSlanClUll. most toxic isolate SG 111 has calculated value 40.2 tig mg of artificial diet.
