Journal of Biological Control

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Biological Compatibility of Beauveria bassiana (Balsamo) Vuillemin Isolate with Different Insecticides and Neem Formulations Commonly Used in Rice Pest Management


Affiliations
1 Regional Research Station, TNAU, Vridhachalam 606001, Tamil Nadu, India
2 Center for Plant Protection Studies, TNAU, Coimbatore 641003, Tamil Nadu, India
3 Biological Control, ICAR, Bangalore 560024, Karnataka, India
 

Compatibility of Beauveria bassiana (Balsamo) Vuillemin (isolate BbCm KKL 1100) with twelve insecticides and three neem formulations was examined on agar plate to develop suitable combinations for the management of insect pests in rice fields. All chemical and botanical insecticides inhibited mycelial growth of B. bassiana either partially or completely depending on their concentrations (10X, 1X and 0.1X, where X = treated concentration). Chemical insecticides completely inhibited the mycelial growth of B. bassiana, while the neem formulations inhibited 70-86% biomass production of the fungus at 10X concentration. At 1X concentration, carbofuran caused total inhibition, but all other insecticides caused 47.4-75.5% inhibition. However, at 0.1X concentration, only neem seed kernel extract, chlorpyriphos and dimethoate exhibited 22.2%, 27.3% and 32.6% mycelial inhibition, respectively, and these could be used with B. bassiana in the field condition.

Keywords

Beauveria bassiana, Compatibility, Insecticides, Neem Products and Rice Pests.
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  • Biological Compatibility of Beauveria bassiana (Balsamo) Vuillemin Isolate with Different Insecticides and Neem Formulations Commonly Used in Rice Pest Management

Abstract Views: 326  |  PDF Views: 133

Authors

V. Ambethgar
Regional Research Station, TNAU, Vridhachalam 606001, Tamil Nadu, India
M. Swamiappan
Center for Plant Protection Studies, TNAU, Coimbatore 641003, Tamil Nadu, India
R. J. Rabindra
Biological Control, ICAR, Bangalore 560024, Karnataka, India
R. Rabindran
Center for Plant Protection Studies, TNAU, Coimbatore 641003, Tamil Nadu, India

Abstract


Compatibility of Beauveria bassiana (Balsamo) Vuillemin (isolate BbCm KKL 1100) with twelve insecticides and three neem formulations was examined on agar plate to develop suitable combinations for the management of insect pests in rice fields. All chemical and botanical insecticides inhibited mycelial growth of B. bassiana either partially or completely depending on their concentrations (10X, 1X and 0.1X, where X = treated concentration). Chemical insecticides completely inhibited the mycelial growth of B. bassiana, while the neem formulations inhibited 70-86% biomass production of the fungus at 10X concentration. At 1X concentration, carbofuran caused total inhibition, but all other insecticides caused 47.4-75.5% inhibition. However, at 0.1X concentration, only neem seed kernel extract, chlorpyriphos and dimethoate exhibited 22.2%, 27.3% and 32.6% mycelial inhibition, respectively, and these could be used with B. bassiana in the field condition.

Keywords


Beauveria bassiana, Compatibility, Insecticides, Neem Products and Rice Pests.

References