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Dhandapani, N.
- Consumption, Digestion and Utilization of Biopesticides Treated Tomato Fruits by Helicoverpa armigera (Hubner)
Abstract Views :229 |
PDF Views:141
Authors
Affiliations
1 Department of Agricultural Entomology Tamil Nadu Agricultural University Coimbatore 641 003, Tamil Nadu, IN
1 Department of Agricultural Entomology Tamil Nadu Agricultural University Coimbatore 641 003, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 15, No 1 (2001), Pagination: 59-62Abstract
Effect of biopesticides, viz., Bacillus thuringiensis subsp. Kurstaki, nuclear polyhedrosis virus and neem formulation on consumption, digestion and utilisation of tomato fruits by the fruit borer, Helicoverpa annigera (Hubner) was studied. In general food intake, faecal matter voided and weight gained by the larvae were lower in biopesticide treated fruits than in untreated ones. The total food consumed (0.008g), weight of faeces voided (0.0015g), larval weight gain (0.0018) and feeding period (1.25 days) were the lowest in B.t. @ 0.5g/lit. whereas, it was 1.6582g, 0.9404g. 0.271g and 10.83 days in untreated check, respectively. The consumption index (CI) was lowest in B.t. @ 0.2g/lit (0.098). Growth rate (GR), approximate digestibility (AD), efficiency of conversion of ingested food to body substance (ECI) and Efficiency of Conversion of Digested food to body matter (ECD) were also worked out and discussed.Keywords
Biopesticides, Helicoverpa armigera, Tomato, Utilization.- A Study on the Management of some Pests of Groundnut (Arachis hypogaea L.) with Biocontrol Agents
Abstract Views :262 |
PDF Views:162
Authors
Affiliations
1 Centre for Plant Protection Studies Tamil Nadu Agricultural University, Coimbatore - 641003, IN
1 Centre for Plant Protection Studies Tamil Nadu Agricultural University, Coimbatore - 641003, IN
Source
Journal of Biological Control, Vol 8, No 1 (1994), Pagination: 1-4Abstract
Results of a field experiment conducted to compare the field efficacy of biocontrol agents with locally recommended practice of using chemical insecticides revealed that use of Trichogramma chilonis (Ishii) (1,00,000/ha) and Chrysoperla carnea (Banks) (50,000/ha) 40 and 55 days after sowing could effectively check the population of Hellcoverpa armlgera (Bubn.) and Bemisia tabaci (Genn.), This was on par with insecticides. Application of Nuclear Polyhedrosis Virus of Spodoptera litura (Fb.) at 250 larval equivalents +2.5 kg crude sugar/ha could effectively control the larval population of S. litura, Pod yield was increased significantly in biocontrol plots which was on par with chemical insecticide-treated plots.Keywords
Groundnut, Biocontrol,Helicoverpa armigera, Spodoptera litura, Bemisia tabaci, Empoasca kerri.- Efficacy of Nuclear Polyhedrosis Virus Against Spodoptera litura (Fab.) on Tobacco (Nicotiana tabacum L.) in Different Locations of Tamil Nadu, India
Abstract Views :224 |
PDF Views:110
Authors
Affiliations
1 Department of Entomology, Tamil Nadu Agricultural University, Coimbatore - 641 003, IN
1 Department of Entomology, Tamil Nadu Agricultural University, Coimbatore - 641 003, IN
Source
Journal of Biological Control, Vol 6, No 1 (1992), Pagination: 22-25Abstract
Field experiments conducted against Spodoptera litura (Fab.) with nuclear polyhedrosls virus (NPV) on tobacco (Nicotiana tabacum L.) in twelve different locations of Tamil Nadu indicated that two rounds of application at 250 larval equivalents (LE)/ha with crude sugar 2.5 kg/ha at 10, days Interval was significantly superior to untreated control in reducing the larval population, irrespective of the locations tested.Keywords
NPV, Spodoptera litura, Tobacco.- Efficacy of Nuclear Polyhedrosis Virus Formulation for the Control of Spodoptera litura (Fab.) on Chillies
Abstract Views :200 |
PDF Views:111
Authors
N. Dhandapani
1,
S. Jayaraj
1
Affiliations
1 Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore 641 003, IN
1 Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore 641 003, IN