Effect of Diflubenzuron and Bacillus thuringiensis var. kurstaki Baits on the Growth and Development of Spodoptera litura (Fab.) Larvae
B. Manmadha Rao, P.V. Krishnayya
Abstract
B. Manmadha Rao, P.V. Krishnayya
Abstract
The combination of diflubenzuron (0.0125%) and Bacillus thuringiensis var. kurstaki (0.075%) at half of their recommended concentrations significantly reduced the larval and pupal weights, and prolonged the larval and pupal durations of S. litura. This combination has synergistic effect in resulting the highest larval (38.9%) and pre-pupal (44.4%) mortalities, and the lowest normal adult emergence (3.3%).
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The combination of diflubenzuron (0.0125%) and Bacillus thuringiensis var. kurstaki (0.075%) at half of their recommended concentrations significantly reduced the larval and pupal weights, and prolonged the larval and pupal durations of S. litura. This combination has synergistic effect in resulting the highest larval (38.9%) and pre-pupal (44.4%) mortalities, and the lowest normal adult emergence (3.3%).
Key concepts: Spodoptera litura, Pupa, Diflubenzuron, Larva, Bacillus thuringiensis, Biology, Toxicology, Veterinary medicine