title: Isolation of Bacillus thuringiensis for microbiological control of insects.
abstract: Eleven of 180 local isolates, belonging to Bacillus thuringiensis, were tested for their pathogenicity to pinkbollworm larvae (Pectinophora gossypiella). Three strains, namely RS-25, RS-35, and RS-45, showed a positive insecticidal activity. Their activities based on the crystalline inclusion bodies. The LD50 (hours) for larvae was 8, 12, and 6 hours, respectively.
mesh_terms: D000818:Animals; D001413:Bacillus thuringiensis / Q000302:isolation & purification* / Q000472:pathogenicity; D007300:Insect Control; D007814:Larva / Q000382:microbiology; D007915:Lepidoptera / Q000382:microbiology*; D007928:Lethal Dose 50; D009036:Moths / Q000382:microbiology*; D010572:Pest Control, Biological; D013171:Spores, Bacterial / Q000472:pathogenicity