Field Efficacy of <I>Beauveria bassiana</I> (Bals.) Vuill. and <I>Metarhizium anisopliae</I> (Metsch.) Sorok. against White Grubs in Assam

Badal Bhattacharyya; A. A. L. H. Baruah; Purnimadas; U. Bhuyan

doi:10.18311/jbc/2008/3801

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Authors

Badal Bhattacharyya
AINP on White grubs and other Soil Arthropods, Department of Entomology, Assam Agricultural University, Jorhat- 785013, Assam ,IN
A. A. L. H. Baruah
AINP on White grubs and other Soil Arthropods, Department of Entomology, Assam Agricultural University, Jorhat- 785013, Assam ,IN
Purnimadas
AINP on White grubs and other Soil Arthropods, Department of Entomology, Assam Agricultural University, Jorhat- 785013, Assam ,IN
U. Bhuyan
AINP on White grubs and other Soil Arthropods, Department of Entomology, Assam Agricultural University, Jorhat- 785013, Assam ,IN

DOI:

https://doi.org/10.18311/jbc/2008/3801

Keywords:

Beauveria bassiana, Green Gram, Metarhizium anisopliae, White Grub.

Abstract

In the present study, efforts were made to explore the possibility of using Beauveria bassiana and Metarhizium anisopliae aione or in combination with different insecticides for the management of white grubs in green gram. B. bassiana formulation applied @ 5í—10¹³ conidia ml^âˆ’1 in combination with imidacloprid 200SL at 48g a.i. ha^âˆ’1 was found to be effective exhibiting lowest plant mortality (1.66%) and lowest grub population (1.60/pit), which resulted in highest yield of 6,83q ha^âˆ’1. Likewise M. anisopliae when applied @ 5í—10¹³ conidia ml^âˆ’1 in combination with imidacloprid 200SL at 48g a.i. ha^-1 resulted in lowest plant mortality (2.28%) and grub population (1.12/pit) and highest yield of 6.79q ha^-1.