Journal of Biological Control

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In Vitro Inhibition of Beauveria bassiana (Bals.) Vuill. Growth by Different Commonly Used Insecticides in Rice


Affiliations
1 Mycology Research Section, Department of Plant Pathology, Assam Agricultural University, Jorhat, 785 013, Assam, India
2 Department of Entomology, Assam Agricultural University, Jorhat, 785 013, Assam, India
 

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.
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  • In Vitro Inhibition of Beauveria bassiana (Bals.) Vuill. Growth by Different Commonly Used Insecticides in Rice

Abstract Views: 333  |  PDF Views: 114

Authors

K. C. Puzari
Mycology Research Section, Department of Plant Pathology, Assam Agricultural University, Jorhat, 785 013, Assam, India
L. K. Hazarika
Department of Entomology, Assam Agricultural University, Jorhat, 785 013, Assam, India
Pranab Dutta
Mycology Research Section, Department of Plant Pathology, Assam Agricultural University, Jorhat, 785 013, Assam, India
P. Das
Mycology Research Section, Department of Plant Pathology, Assam Agricultural University, Jorhat, 785 013, Assam, India

Abstract


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.