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Puzari, K. C.
- 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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PDF Views:157
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.Full Text
References
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- Mass Production of Beauveria bassiana (Bals.)Vuill. for the Management of Rice Hispa, Dicladispa armigera (Olivier)
Abstract Views :407 |
PDF Views:249
Authors
Affiliations
1 Department of Entomology, Assam Agricultural University (AAU), Jorhat 785 013, Assam, IN
2 Department of Life Sciences, Dibrugarh University, Dibrugarh 786 004, Assam, IN
3 Department of Plant Pathology, AAU, Jorhat 785 013, Assam, IN
1 Department of Entomology, Assam Agricultural University (AAU), Jorhat 785 013, Assam, IN
2 Department of Life Sciences, Dibrugarh University, Dibrugarh 786 004, Assam, IN
3 Department of Plant Pathology, AAU, Jorhat 785 013, Assam, IN
Source
Journal of Biological Control, Vol 26, No 4 (2012), Pagination: 347–350Abstract
Potato broth, rice gruel, coconut water, rice husk, sawdust and rice bran were evaluated for mass culturing of Beauveria bassiana (Bals.) Vuill (Strain AAU-09). Amongst the solid media rice husk in addition of 2% dextrose was superior to others in terms of spore production (6.25 x 107 conidia/ml) and pathogenicity (86.67%) to Dicladispa armigera (Olivier) adults. Likewise, amongst the liquid media potato broth supplemented with synthetic chitin (2%), dextrose (2%) and peptone (2%) supported maximum spore production.Keywords
Entomopathogenic Fungi, Beauveria bassiana, Mass Production, Pathogenicity, Spore Production.Full Text
References
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- In Vitro Inhibition of Beauveria bassiana (Bals.) Vuill. Growth by Different Commonly Used Insecticides in Rice
Abstract Views :334 |
PDF Views:114
Authors
Affiliations
1 Mycology Research Section, Department of Plant Pathology, Assam Agricultural University, Jorhat, 785 013, Assam, IN
2 Department of Entomology, Assam Agricultural University, Jorhat, 785 013, Assam, IN
1 Mycology Research Section, Department of Plant Pathology, Assam Agricultural University, Jorhat, 785 013, Assam, IN
2 Department of Entomology, Assam Agricultural University, Jorhat, 785 013, Assam, IN
Source
Journal of Biological Control, Vol 20, No 1 (2006), Pagination: 51-56Abstract
In vitro inhibition of 13 different insecticides and one botanical on Beauveria bassiana growth was tested. Two doses of chemical insecticides, one at recommended dose (RD) and another at half of recommended dose (½. RD) and for botanicals three doses, first one at recommended and one at ½ and another at ½ of the recommended dose were tested. 100 per cent of mycelial growth was observed when the entomopathogen was grown in presence of monocrotophos (0.31%) and dichlorvos (0.12%). Cypermethrin, deltamethrin, alphamethrin and phosphamidon at recommended dose showed growth inhibition of < 50 per cent. Half of the recommended dose of deltamethrin was found having lowest inhibition (14.06 %).Keywords
Beauveria bassiana, Dicladispa armigera, Inhibitory Effect, Insecticides, Rice Hispa.Full Text
- Medium for Mass Production of Beauveria bassiana (Balsamo) Vuillemin
Abstract Views :284 |
PDF Views:207
Authors
Affiliations
1 Mycology Research Section, Assam Agricultural University, Jorhat 785 013, Assam, IN
2 Department of Entomology, Assam Agricultural University, Jorhat, IN
1 Mycology Research Section, Assam Agricultural University, Jorhat 785 013, Assam, IN
2 Department of Entomology, Assam Agricultural University, Jorhat, IN
Source
Journal of Biological Control, Vol 11, No 1&2 (1997), Pagination: 97-100Abstract
A medium was developed with rice hull, saw dust and rice bran at a ratio of 75:25:100, respectively, to mass culture Beauveria bassiana (Balsamo) Vuillemin, a potential biocoritrol agent against the rice hispa, Dicladispa armigera (Olivier) (Coleoptera:Chrysomelidae). It produced 39.33 × 107 conidia/ml of water 24 days after inoculation. The mortality of the adult could be achieved up to 78.6 per cent at spray concentration of 106 spores/ml of water.Keywords
Beauveria bassiana, Dicladispa armigera, Rice Hull, Rice Bran, Saw Dust.Full Text
- Pathogenicity of Beauveria Bassiana (Bals.) Vuill, on Developmental Stages of Rice Hispa, Dicladispa Armigera (Olivier)
Abstract Views :237 |
PDF Views:146
Authors
Affiliations
1 Mycology Research Section, Assam Agricultural University, Jorhat-785013, Assam, IN
2 Department of Entomology, Assam Agricultural University, Jorhat - 785013, Assam, IN
1 Mycology Research Section, Assam Agricultural University, Jorhat-785013, Assam, IN
2 Department of Entomology, Assam Agricultural University, Jorhat - 785013, Assam, IN
Source
Journal of Biological Control, Vol 8, No 2 (1994), Pagination: 133-135Abstract
Phenological studies on the white muscardine fungus Beauveria bassiana (8als.) Vuill, and Dicladispa armigera (Olivier), a serious insect pest of rice in Assam, India (Hazarika and Dutta, 1991), revealed that the fungus was adapted to the rainfed rice ecosystem. The fungus occurred naturally as an effective biocontrol agent suppressing D.armigera populations (Hazarika and Puzari, 1990; Puzari and Hazarika 1991, 1992). Agarwal (1990) showed the association of B.bassiana with egg, larva, pupa and adults of different insects with variable susceptibility to different stages. This investigation depicts such effects on the embryonic and post embryonic stages of D. armigera.Keywords
Dicladispa armigera, Beauveria bassiana, Developmental Stages.Full Text
- SEM Study on Morphological Changes in Metarhizium anisopliae Infected Aphis craccivora Koch.
Abstract Views :298 |
PDF Views:110
Authors
Sarodee Boruah
1,
Pranab Dutta
1,
Joyarani Pegu
1,
Himadri Kaushik
1,
N. Gogoi
2,
K. C. Puzari
1,
G. N. Hazarika
3
Affiliations
1 Department of Plant Pathology, Assam Agricultural University, Jorhat-785013, IN
2 Department of Environmental Science, Tezpur University, Assam, IN
3 Department of Plant Pathology, Assam Agricultural University, Jorhat-785013
1 Department of Plant Pathology, Assam Agricultural University, Jorhat-785013, IN
2 Department of Environmental Science, Tezpur University, Assam, IN
3 Department of Plant Pathology, Assam Agricultural University, Jorhat-785013
Source
Journal of Biological Control, Vol 30, No 1 (2016), Pagination: 29-33Abstract
Morphological changes in Metarhizuim anisopliae (Metschnikoff) Sorokin infected cow pea aphid, Aphis craccivora Koch were studied by scanning electron microscope (SEM). Aphids were caged on paired lantern chimney over cowpea twigs dipped in conical flasks with water infected and inoculated with fungal propagules of M. anisopliae at the concentration of 1X106 spores /ml of water. Infected aphids were observed under SEM and it showed severe cuticular damage, abnormalities in sensory systems as well as deformation of all the body parts. The hydrophobic conidia of M. anisopliae were found to attach to all body regions. It was evident that mycelial growth and conidiophores with conidia of M. anisopliae covered the body surface and penetrates inside the body of infested aphid causing damage to the pest by disturbing its major physiological activities leading to its death.Keywords
Aphis craccivora, Metarhizuim anisopliae, Scanning Electron Microscope.Full Text
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