Narayanan, K.

• Cross Infectivity of Bombyx mori Nucleopolyhedrovirus to Cabbage Leaf Webber, Crocidolomia binotalis Zeller (Lepidoptera: Pyrahdae)

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Authors

K. Narayanan ¹

Affiliations
1 Project Directorate of Biological Control (ICAR), P. B. No. 2941, H. A. Farm Post, Bellary Road, Hebbal, Bangalore 560024, Karnataka, IN

Source

Journal of Biological Control, Vol 19, No 2 (2005), Pagination: 201-202

Abstract

Nucleopolyhedrovirus isolated from mulberry silkworm, Bombyx mori (Linnaeus) was cross infective to cabbage leaf webber, Crocidolomia binotalis.

Keywords

Bombyx mori NPV, Crocidolomia binotalis, Cross Infectivity.

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• Nuclear Polyhedrosis Viruses from Coconut Blackheaded Caterpillar, Opisina arenosella Walker and Sorghum Spotted Stern Borer, Chilo partellus (Swinhoe)

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Authors

K. Narayanan ¹, K. Veenakumari ¹

Affiliations
1 Project Directorate of Biological Control (ICAR) P.B. No. 2491. H. A. Farm Post, Bellary Road, Hebbal Bangalore 560024, Karnataka, IN

Source

Journal of Biological Control, Vol 17, No 1 (2003), Pagination: 97-98

Abstract

Two nuclear polyhedrons viruses from the coconut black headed caterpillar, Opisina arenosella Walker and sorghum spotted stem borer, Chilo partellus (Swinhoe) were Isolated and reported for the first time from India. The pathogenicity of both the NPVs have been tested and proved along with gross pathological symptoms.

Keywords

Chilo partellus Nuclear polyhedrosis Virus, Opisina arenosella.

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• Studies on the Dose-Mortality Relationship Between the Entomofungal Pathogen Beauveria bassiana (Bals.) Vuillemin and Heliothis armigera Hubner (Lepidoptera: Noctuidae)

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Authors

C. Gopalakrishnan ¹, K. Narayanan ¹

Affiliations
1 Division of Entomology and Nematology, Indian Institute of Horticultural Research (ICAR) Bangalore-560 089, IN

Source

Journal of Biological Control, Vol 4, No 2 (1990), Pagination: 112-115

Abstract

Beauveria bassiana (Bals.) Vuillemin was pathogenic to all the stages of Heliothis armigera Hubner Inflicting 60-100 and 100% mortality respectively, to the larval Instars I-V and the eggs at 1.0 × 10⁷ conidia/ml. Pupal mortality was 60% at 1.0 × 10⁹ conldla/ml and 80% mortality was observed in the prepupae and thc adults at 1.0 × 10¹⁰ conldla/ml with an incubation period ranging from 2-14 days.

Keywords

Beauveria bassiana, Heliothis armigera, Dose-Mortality Relationship.

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• Epizootiology of Nomuraea rileyi (Farlow) Samson in Field Populations of Helicoverpa (=Heliothis) armigera (Hubner) in Relation to Three Host Plants

Abstract Views :196  |  PDF Views:113

Authors

C. Gopalakrishnan ¹, K. Narayanan ²

Affiliations
1 Division of Entomology and Nematology, Indian Institute of Horticultural Research, Bangalore 560 089, IN
2 Biological Control Centre, National Centre for Integrated Pest Management, Bellary Road, H.A Farm Post, Bangalore -560 024, IN

Source

Journal of Biological Control, Vol 3, No 1 (1989), Pagination: 50-52

Abstract

Epizootlological studies of Nomuraea rileyi in field population of Helicoverpa (=Heliothis) armigera occurring on tomato, field beans and vegetable pigeonpea, grown under uniform field conditions, showed higher rates of fungal infection in H. armigera found on vegetable pigeonpea (37%) than on field beans (28.2%) and tomato (20.5%). Further, H. armigera larvae collected from these host plants and reared on the respective host plants under laboratory conditions also revealed the same trend.

Keywords

Nomuraea rileyi, Helicoverpa armigera, Epizootiology.

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• Effect of Acquisition Feeding Period on the Mortality of Heliothis armigera (Hbn.) due to Nuclear Polyhedrosis Virus

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Authors

K. Narayanan ¹, S. Jayaraj ²

Affiliations
1 Division of Entomology/Nematology, Indian Institute of Horticultural Research, Hessaraghatta Lake post, Bangalore 560 089, IN
2 Centre for Plant protection Studies, Tamil Nadu Agricultural University, Coimbatore 641 003, IN

Source

Journal of Biological Control, Vol 2, No 2 (1988), Pagination: 135-136

Abstract

For virus control of insects, it is necessary to fix the minimum acquisition feeding period for the larvae to pick up infection by ingesting the polyhedra - treated food surface, before,the virus is affected by certain environmental factors. The aim of the present study was to find out the effect of acquisition feeding period in the laboratory on the mortality of Heliothis armigera (Hbn.) by nuclear polyhedrosis virus (NPV).

Keywords

Heliothis armigera, NPV, Acquisition Feeding Time.

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