In-vitro compatibility of entomopathogenic fungus, Beauveria bassiana (Balsamo) Vuillemin RB PTB with selected fungicides and insecticides
Abstract
The in vitro compatibility of a potent indigenous isolate of Beauveria bassiana RB PTB with selected pesticides recommendedfor pest management in rice was evaluated using the poisoned food technique. Among insecticides, flubendiamide 20 WG(0.005%) and thiamethoxam 25 WG (0.005%) were compatible with the lowest growth inhibition of 10.58 and 12.02 percent, respectively. However, acephate 75 SP (0.15%) and malathion 50 EC (0.1%) were incompatible with 66.35 and 59.61per cent inhibition. Among fungicides, copper hydroxide 77 WP (0.1%) was compatible, while carbendazim 50 WP (0.1%), mancozeb 75 WP (0.2%), hexaconazole 5 EC (0.2%) and tebuconazole 50% + trifloxystrobin 25% 75 WG (0.04) were incompatible with 100 per cent growth inhibition. Results of the present study suggest that flubendiamide 20 WG (0.005%), thiamethoxam 25 WG (0.005%) and copper hydroxide 77 WP (0.1%) can be safely integrated with the entomopathogenic fungus B. bassiana RB PTB for rice pest management.
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