Articles
Evaluation of entomopathogenic fungi, Beauveria bassiana (BbI8) against the management of diamondback moth, Plutella xylostella
Article number
1378_12
Pages
89 – 96
Language
English
Abstract
Diamondback moth (DBM), Plutella xylostella is considered as a perilous pest throughout the world, sometimes even causing a greater loss of up to 90%. Intensive use of insecticides has developed resistance to DBM, which paved the way for biological control.
In this study, naturally occurring Beauveria bassiana isolates were collected from different locations and evaluated against DBM in a crucifer ecosystem. B. bassiana strain BbI8 was found to be effective against DBM under laboratory bioassays.
Further, the isolate was mass multiplied in an optimized novel media, NMBb and developed into a formulation using carrier materials.
The formulated products were evaluated for its efficacy against DBM under both pot and field conditions.
The evaluation of different formulations of B. bassiana against P. xylostella on cauliflower under pot culture experiments revealed that NMBbB at 6 g L‑1 recorded the highest cumulative mean population reduction of 69.66%, followed by NMBbC at 6 g L‑1 (64.49%). In field conditions next to Chlorantriniprole 18.5 SC standard check, the highest percent reduction of 68.64 and 62.12 in cauliflower was recorded during two seasons by NMBbB at 6 g L‑1.
In this study, naturally occurring Beauveria bassiana isolates were collected from different locations and evaluated against DBM in a crucifer ecosystem. B. bassiana strain BbI8 was found to be effective against DBM under laboratory bioassays.
Further, the isolate was mass multiplied in an optimized novel media, NMBb and developed into a formulation using carrier materials.
The formulated products were evaluated for its efficacy against DBM under both pot and field conditions.
The evaluation of different formulations of B. bassiana against P. xylostella on cauliflower under pot culture experiments revealed that NMBbB at 6 g L‑1 recorded the highest cumulative mean population reduction of 69.66%, followed by NMBbC at 6 g L‑1 (64.49%). In field conditions next to Chlorantriniprole 18.5 SC standard check, the highest percent reduction of 68.64 and 62.12 in cauliflower was recorded during two seasons by NMBbB at 6 g L‑1.
Authors
L.K. Benjamin, S. Nakkeeran, J.S. Kennedy
Keywords
Beauveria bassiana, biopesticides, diamondback moth
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