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Kalita, Surajit
- Influence of Storage Conditions on Viability and Infectivity of talc based WP Formulation of Beauveria bassiana Against Rice Hispa, Dicladispa armigera (Olivier)
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Authors
Affiliations
1 Department of Entomology, IN
2 Department of Plant Pathology, Assam Agricultural University (AAU), Jorhat 785 013, Assam, IN
3 Department of Life Sciences, Dibrugarh University, Dibrugarh, IN
4 Krishi Vigyan Kendra, Bongaigaon, Assam Agricultural University (AAU), Jorhat 785 013, IN
1 Department of Entomology, IN
2 Department of Plant Pathology, Assam Agricultural University (AAU), Jorhat 785 013, Assam, IN
3 Department of Life Sciences, Dibrugarh University, Dibrugarh, IN
4 Krishi Vigyan Kendra, Bongaigaon, Assam Agricultural University (AAU), Jorhat 785 013, IN
Source
Journal of Biological Control, Vol 27, No 3 (2013), Pagination: 229–233Abstract
Shelf life of talc based wettable powder formulation of Beauveria bassiana (Bals.) Vuill. was evaluated at room temperature (24±1°C), refrigerated condition (4°C) and in deep freeze condition (–4°C to –6°C). At room temperature, viability of conidia lasted up to 180 days with 20.22×107 conidia/gm, having 48% pathogenicity, whereas under refrigeration the same lasted for 210 days having the same conidial density but with 69.45% pathogenicity; under deep refrigeration, though viability lasted for 300 days with same conidial load, but substantially reduced pathogenicity to 20%.Keywords
Beauveria bassiana, Shelf Life, Wettable Powder, Formulation, Pathogenicity.References
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- Das Purnima, Hazarika LK, Bora DS, Puzari, KC, Dutta Pranab. 2012. Mass production of Beauveria bassiana for management of rice hispa, Dicladispa armigera (Olivier) J Biol Control 26(4): 347–350.
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- Indigenous Technical Knowledge (ITK) for Production and Protection of Vegetables, Plantation, Cash and Fruit Crops in Assam, India
Abstract Views :884 |
PDF Views:0
Authors
Affiliations
1 Department of Entomology, Assam Agricultural University, Jorhat – 785013, Assam, IN
1 Department of Entomology, Assam Agricultural University, Jorhat – 785013, Assam, IN
Source
Asian Agri-History, Vol 22, No 4 (2018), Pagination: 271-280Abstract
Indigenous Technical Knowledge (ITK) related to production and protection of horticultural crops has been practiced by the ancestors over centuries. The collection, compilation, documentation and scientific evaluation of these ITK should be undertaken for use by the present and future generations. While documenting the ITK methods commonly practiced by the farming communities of Assam, 14 ITK methods related to vegetables, 10 each to plantation and cash crops, and 11 to fruit crop production and protection were identified, primarily through a semi-structured questionnaire, and these are discussed in this article for their usefulness for sustainable agriculture.Keywords
Cash Crop, Fruit Crop, Indigenous Technical Knowledge (ITK), Plantation Crop, Plant Protection, Vegetables.References
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- Exploration Of Native Plants Of Assam For Host Preference Of Lac Insect Kerria Chinensis
Abstract Views :105 |
PDF Views:62
Authors
Tanjil Rahman
1,
Purnima Das
1,
L. K. Hazarika
2,
Surajit Kalita
1,
K. K. Sharma
3,
A. Mohanasundaram
3
Affiliations
1 Department of Entomology, Assam Agricultural University, Jorhat, 785013 Assam, IN
2 Assam Women’s University, Jorhat, 785013, Assam, IN
3 ICAR-Indian Institute of Natural Resins and Gums, Ranchi, 834010, Jharkhand, IN
1 Department of Entomology, Assam Agricultural University, Jorhat, 785013 Assam, IN
2 Assam Women’s University, Jorhat, 785013, Assam, IN
3 ICAR-Indian Institute of Natural Resins and Gums, Ranchi, 834010, Jharkhand, IN
Source
Indian Journal of Entomology, Vol 84, No 2 (2022), Pagination: 280-285Abstract
Field and laboratory experiments were carried out at the Assam Agricultural University, Jorhat during October, 2018 to April, 2019 to study the host plant preference of local lac insect Kerria chinensis on eight native plants of Assam viz., Flemingia semialata, F. strobilifera, Indigofera teysmannii, Ficus religiosa, Zizyphus mauritiana, Litchi chinensis, Hibiscus rosa-sinensis and Cajanus cajan. Results indicated that the maximum productivity of broodlac (0.31± 0.01kg) and longest lifecycle duration (171.92± 2.08 days) was recorded in F. semialata. Study on morphological parameters revealed that the girth of the bark of the plants possesses significant negative correlation with the settlement density of crawlers as well as production of lac. However, trichome density of the bark was found to possess positive but non-significant correlation with the settlement density of crawlers as well as production of lac.Keywords
Kerria chinensis, Assam, productivity, morphology parameters, native plants, Flemingia semialata, trichome density, girth, broodlac, life cycle, settlement density of crawlers, production of lacReferences
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