Thakur, J. N.

• Comparative Toxicity of Different Insecticides against Trichogramma chilonis Ishii

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Authors

J. N. Thakur ¹, A. D. Pawar ²

Affiliations
1 Central Integrated Pest Management Centre Sharma Ni was, Tank Road, Solan, 173 212; Himachal Pradesh, IN
2 Directorate of Plant Protection, Quarantme and Storage, N.H.IV, Faridabad, 121 001, Haryana, IN

Source

Journal of Biological Control, Vol 14, No 2 (2000), Pagination: 51-53

Abstract

Five insecticides including two neem-based insecticides namely Achook and Neemactin, two biopesticides namely Halt and Dipel (both are formulations of Bacillus thuringiensis) and endosulfan were evaluated for their relative toxicity to newly emerged adults of T. chilonis. Observations revealed that neem based pesticides and biopesticides are harmless while endosulfan is slightly toxic to egg parasitoid.

Keywords

Biopesticides, Egg Parasitoid, Neem-Based Insecticides, Relative Toxicity, Trichogramma chilonis.

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• Incidence of Deudorix epijarbas Moore (Lepidoptera:Lycaenidae) and its Parasitoids on Pomegranate in Jammu Region

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Authors

J. N. Thakur ¹, O. P. Verma ¹, J. P. Singh ¹, A. D. Pawar ²

Affiliations
1 Central Integrated Pest Management Centre, Abhinandan Bhavan, P. H. Road, Saproon, Solan-173001, H. P., IN
2 Central Insecticide Board Registration Committe, Directorate of Plant Protection, Quarantine and Storage, National Highway IV, Faridabad, Haryana, IN

Source

Journal of Biological Control, Vol 9, No 2 (1995), Pagination: 116-118

Abstract

Studies conducted during 1993 on incidence of pomegranate fruit borer and its natural enemies in Jammu region of Jammu & Kashmir state revealed that only Deudorix epijarbas Moore is infesting pomegranate in this region. Mean fruit infestation was 25.33%, however, infestation was lower at Kud which is located at higher atitude in comparison to Chenani and Dhrumtal. Two species of parasitoids i.e. Anastatus sp. nr. kashmirensis Mathur and Telenomus cyrus Nixon were recorded parasitizing on an average 56.43% eggs. Inundative releases of Trichogramma chilonis Ishii did not result in its establishment.

Keywords

Biological Control, Deudorix epijarbas, Natural Enemies, Parasitoids, Pomegranate Butterfly, Trichogramma chilonis.

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• Spider Fauna in the Rice Ecosystem of Jammu

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Authors

J. N. Thakur ¹, J. P. Singh ², O. P. Verma ², M. C. Diwakar ³

Affiliations
1 Central Integrated Pest Management Centre, Abhinandan Bhawan, P.H. Road, Solan, Himachal Pradesh, IN
2 Central Integrated Pest Management Centre, 73 B/B, Gandhinagar, Jammu, Jammu & Kashmir, IN
3 Directorate of Plant Protection, Quarantine and Storage, N.H. IV, Faridabad, Haryana, IN

Source

Journal of Biological Control, Vol 9, No 2 (1995), Pagination: 125-127

Abstract

Twenty species or spiders were observed in the rice ecosystem in Jammu region. The predominantly common species were under the genera Tetragnatha, Neoscona, Oxyopes, Phidippus and Pardosa. Among these, the spider population was noticed to increase graduatlywith the growth of rice plants and almost doubled from August to September.

Keywords

Population Abundance, Rice Ecosystem, Spider Fauna.

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• Introduction, Colonisation and New Records of Some Biocontrol Agents of San Jose Scale, Quadraspidiotus perniciosus Comstock (Hemiptera: Coccidae) in Kullu Valley, H.P., India

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Authors

J. N. Thakur ¹, A. D. Pawar ², U. S. Rawat ³

Affiliations
1 Central Integrated Pest Management Centre, 73, BIB Gandhi nagar, Jammu, IN
2 Directorate of Plant Protection & S.N.H.IV., Faridabad, IN
3 Central Integrated Pest Management Centre, Solan, H.P., IN

Source

Journal of Biological Control, Vol 7, No 2 (1993), Pagination: 99-101

Abstract

San Jose Scale, Qudraspidiotus perniosus Comstock is a serious pest of temperate fruits and is world-wide in distribution. The pest has been recorded on more than 200 different species of plants (Atwal, 19?6). In the Himachal Pradesh, the pest was first reported at Kullu in 1921 and at Kotgarh (Shimla) in 1924 (Pruthi and Rao, 1951).

Keywords

San Jose Scale, Parasitoids, Investigations, Integrated Pest Management.

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• New Record of two Ectoparasitoids of Castor Hairy Caterpillar, Euproctis scintilians Walker (Lepidoptera: Lymantriidae) in Kullu valley (H.P.)

Abstract Views :243  |  PDF Views:111

Authors

J. N. Thakur ¹, U. S. Rawat ², A. D. Pawar ³

Affiliations
1 Central Biological Control Field Laboratory, Sangribag, Kullu - 175101, IN
2 Central Biological Control Station, Solan - 173212, IN
3 Dte. of Plant Protection Quarantine and Storage, N.H.IV, Faridabad - 121001, IN

Source

Journal of Biological Control, Vol 6, No 1 (1992), Pagination: 40-40

Abstract

The castor hairy caterpillar, Euproctis scintillans Walter has been reported as a minor pest of apple damaging its leaves and young fruits in Kullu valley (Bhalla and Pawar. 1977). During our field survey for pomegranate pests from June to October, the larvae of this pest were found feeding on the buds and flowers of pomegranate fruits. The damage ranged between 5-10% at Channik-har. Upper-Dbalpur and Seobag. However, maximum intensity of damage was recorded at Seobag. Beside pomegranate, the caterpillars were also recorded feeding upon the leader leave" of rice, maize and apple.

Keywords

Euproctis scintillans, Ectoparasitoids, Euplectrus sp., Platyplectrus viridiceps.

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• Natural Enemy Complex of the Cabbage Aphid Brevicoryne brassicae L. (Homoptera:Aphididae) in Kullu Valley, Himachal Pradesh

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Authors

J. N. Thakur ¹, U. S. Rawat ¹, A. D. Pawar ¹, S. S. Sidhu ¹

Affiliations
1 Central Biological Control Field Laboratory, Lugaribhuthi Seobag, Kullu 175 101 (H.P.), IN

Source

Journal of Biological Control, Vol 3, No 1 (1989), Pagination: 69-69

Abstract

The cabbage aphid, Brevicoryne brassicae L. is a serious pest of cabbage, but also attacks cauliflower. Turnip. Radish. Mustard etc. affecting their growth and reducing their market value considerably. The role of natural enemies in containing the aphid population is of considerable importance. Recently. Verma and Makhmoor (1987) have reported various species of syrphid preying upon B. brassicae in mid-hill region of Himachal Pradesh. In the present study, efforts were made to determine the natural enemy complex of B. brassicae other than syrphids in and around the Kullu valley (H.P.) during the years 1987-88 from April to June by conducting regular field surveys. Parasitoids and predators so obtained were identified through CIE, London.

Keywords

Brevicoryne brassicae, Natural Enemy Complex, Kullu Valley.

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• Effects of Commonly used Fungicides on Longevity and Mortality of Encarsia perniciosi (Tower) and Aphytis Sp. proclia group (Hymenoptera: Aphelinidae)

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Authors

J. N. Thakur ¹, U. S. Rawat ², A. D. Pawar ³

Affiliations
1 Central Biological Control Laboratory, Scobag, Kullu 175 101. H.P., IN
2 Central Biological Control Station, Sai Sadan Tank Road, Solan - 173212 (H.P.), IN
3 Biocontrol Division, Directorate of Plant Protection, Quarantine and Storage, N.H. IV. Faridabad - 121001, Haryana, IN

Source

Journal of Biological Control, Vol 2, No 2 (1988), Pagination: 72-73

Abstract

Studies were carried out in the laboratory to determine the toxicity of three commonly used fungicides (carbendazim, captafol and captan) against apple scab in Himachal Pradesh to the adults of two important Hymenopterous parasitoids of San Jose scale, viz., Encarsia perniciosi and Aphytis sp. proclia group. Results revealed that carbendazim 0.025%, captafol 0.16% and captan 0.15% were not toxic to the adults of either E. perniciosi or Aphytis sp. proclia group. There were no significant differences in the mortality and longevity of adult parasitoids or both the species in treated and control batches.

Keywords

Encarsia perniciosi, Aphytis Sp. proclia Group, Fungicides.

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