2021•Journal of Entomology and Zoology StudiesOpen access

Bioefficacy of entomopathogenic nematode, Heterorhabditis bacteriophora against cutworm, Agrotis ipsilon damaging potato under field condition

Gitanjali Devi, Mitul Saikia, Sudhansu Bhagawati, Badal Bhattacharyya

Abstract

A field experiment was conducted at ICR Farm, AAU, Jorhat during the year 2019-20 to evaluate the efficacy of entomopathogenic nematode, Heterorhabditis bacteriophora at different application doses against cutworm, Agrotis ipsilon on potato. Lowest tuber damage was recorded at 5.0×109 IJs/ha followed by at 2.5×109 IJs/ha as compared to untreated control. Highest yield was recorded in the treatment at application dose 5.0×109 IJs/ha. Cost benefit ratio revealed that application with higher dose of H. bacteriophora proved most effective followed by subsequent doses as well as neem pesticide.

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Key concepts: Cutworm, Heterorhabditis bacteriophora, Agrotis ipsilon, Entomopathogenic nematode, Heterorhabditis, Biology, Agronomy, Nematode