Virulence of Native Isolates of Metarhizium anisopliae (Metschnikoff) against Helicoverpa armigera (Lepidoptera: Noctuidae) in Western Uttar Pradesh, India
Ravi Shanker, Rajendra Singh, Malayaj R. Prajapati, Reetesh Pratap Singh, Aditya Patel, Omkar Singh
International Journal of Environment and Climate Change · pp. 713–718 · Published 13 Oct 2023
10.9734/ijecc/2023/v13i113217Abstract
The Chickpea pod borer, Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae), is a destructive pest of chickpeas that has proven difficult to control using conventional methods. We isolate and evaluate the virulence of five isolates of M. anisopliae against larvae of H. armigera. All isolates of M. anisopliae, SVPUAT 1, SVPUAT 2, SVPUAT 3, SVPUAT 4 and SVPUAT 5 were most effective against second instar, H. armigera at 2 ×108 conidia/ml. Among the all isolates, SVPUAT 1 Accession no. ON183248 had the highest virulence 100 percent mortality; whereas, LT50 and LT90 were 3.16 and 5.16 days.
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