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


  • Assam Agricultural University, Mycology Research Section, Department of Plant Pathology, Jorhat, Assam, 785 013, India
  • Assam Agricultural University, Department of Entomology, Jorhat, Assam, 785 013, 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 %).


Beauveria bassiana, Dicladispa armigera, Inhibitory Effect, Insecticides, Rice Hispa.

Subject Discipline

Agriculture Sciences

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