2007•Journal of Entomological ResearchRequires access
Efficacy of Bacillus thuringiensis var. kurstaki in combination with certain plant oils against Spodoptera litura (Fab.)
G. Rajesh Babu, Pulipaka Venkata Krishnayya, P. Arjuna Rao, V. Srinivasa Rao
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Abstract
Application of Bacillus thuringiensis var. kurstaki 0.2% + neem oil 5%, B.t.k. 0.2% + citronella oil 5%, B.t.k. 0.2% + karanj oil 5%, B.t.k. 0.2% + cottonseed oil 5% and B.t.k. 0.2% + sesamum oil 5% resulted in significantly higher larval mortality (80.0% to 55.0%), feeding inhibition (80.0% to 32.4%), mean larval weight reduction (30.0% to 22.2%), pupal weight reduction (31.0% to 15.1%), pupation (18.3% to 41.6%), normal pupae (13.3% to 35.0%), normal adults (11.7% to 31.7%) alongwith prolonged larval and pupal periods, (11.0 to 9.3 days and 12.0 to 10.3 days, respectively) over untreated check.