Bacillus thuringiensis var. thuringiensis in combaterea larvelor gândacului din Colorado

Abstract

The action of entomopathogenic bacteria in combination with FP-09 was determined in the fight against the larvae of the first and third instars of the Colorado beetle (Leptinotarsa decemlineata) in the second generation in field conditions on the "Marabel" variety potato crop, where the biological effectiveness of the variant Bacillus thuringiensis 108 + FP-09 constituted 76.6%. And the biological effectiveness of the entomopathogenic suspension of Bacillus thuringiensis in the control of first-third instar larvae in the variant with FP-09 in combating Leptinotarsa decemlineata larvae was 6.8%. On the potato lots where a solution of the entomopathogenic bacteria Bacillus thuringiensis, FP-09 was used, several entomophages were observed.