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Consumption, digestion and utilization of bio-pesticides toxicated sunflower leaves by Helicoverpa armigera Ravi M., Dhandapani N., Sathiah N., Murugan M. Department of Agril. Entomology, Centre for Plant Protection Studies, T.N.A.V. Coimbatore 641 003, India. E-mail: <raviento@yahoo.co.in>
Abstract Bio-pesticides viz., Bacillus thuringiensis kurstaki (Btk), nucleopolyhedrovirus and azadirachtin affected the food intake, faeces voided and weight gained by the larvae. The consumption index (CI) and growth rate (GR) were lower in Btk treatment. Efficiency of conversion of ingested food (ECI), efficiency of conversion of digested food (ECD) and approximate digestibility (AD) were also higher in Btk treatment compared to other treatments and effects of intoxication on growth and development were discussed. Top Key words Bio-pesticides, Helicoverpa armigera, Helianthus annuus. Top | | | |
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