MICROBIAL CONTROL OF TOMATO FRUIT BORER, Helicoverpa armigera (Hubner) BY ENTOMOPATHOGENIC FUNGAL AGENTS
| dc.contributor.advisor | SHIVAPRAKASH, M K | |
| dc.contributor.author | PESAL, SAVITHA | |
| dc.date.accessioned | 2017-06-30T05:17:00Z | |
| dc.date.available | 2017-06-30T05:17:00Z | |
| dc.date.issued | 2009-07-10 | |
| dc.description.abstract | The investigations on “Microbial control of tomato fruit borer, Helicoverpa armigera (Hubner) by entomopathogenic fungal agents” were carried out during 2008-2009 at the Bio-Control Research Laboratories (BCRL), Pest Control (India) Pvt. Ltd., located at Sriramanahalli, Doddaballapur road, Bangalore. Dose mortality response between Helicoverpa armigera and Beauveria bassiana, Metarhizium anisopliae, Nomuraea rileyi and Verticillium lecanii in the laboratory indicated that mortality of larvae increased with increase in concentration and exposure period. Younger larvae found to be more susceptible to fungal species than older ones. N. rileyi (Nr1) proved superior to B. bassiana (Bb1, Bb2, Bb3) and M. anisopliae (Ma1, Ma2, Ma3). Whereas, V. lecanii (Vl1, Vl2, Vl3) failed to cause disease in H. armigera larvae. N. rileyi (Nr1) was used for further studies. Among the storage conditions, Nomuraea rileyi conidia in wettable powder formulation and oil based formulation recorded highest per cent germination in refrigerated conditions (40C) than at room temperature (27OC). The wettable powder formulation of Nomuraea rileyi viz., Bentonite + glucose (7:1) and Bentonite recorded 71 and 69 per cent mortality, respectively and the oil based formulations viz., sunflower oil, sesame oil and ground nut oil recorded 82, 77 and 77 per cent mortality respectively against 3rd instar larvae of H. armigera under laboratory conditions. In the field experiment, Nomuraea rileyi in sunflower oil formulation (15.43 t/ac) and Bentonite formulation (14.83 t/ac) were proved better. Significantly higher yield was noticed in chemical control (17.28 t/ac). | en_US |
| dc.identifier.other | TH-9359 | |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810023794 | |
| dc.language.iso | en | en_US |
| dc.pages | 114 | en_US |
| dc.publisher | UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU | en_US |
| dc.sub | Microbiology | en_US |
| dc.subject | null | en_US |
| dc.theme | MICROBIAL CONTROL OF TOMATO FRUIT | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | MICROBIAL CONTROL OF TOMATO FRUIT BORER, Helicoverpa armigera (Hubner) BY ENTOMOPATHOGENIC FUNGAL AGENTS | en_US |
| dc.type | Thesis | en_US |