The use of promising entomopathogenic fungi for eco-friendly management of Helicoverpaarmigera Hubner in chickpea

Abstract

Gram pod borer, Helicoverpa armigera Hubner is known to be a major constraint of chickpea production which causes serious economic loess. The management of this pest in any crop is always been challenge to the growers, famers and researcher. Thus, present study evaluated some promising entomopathogenic fungi for the sustainable management of H. armigera to minimize the economic loss in chickpea. Five different fungal isolates viz; Beauveria bassiana, Trichoderma virens, Trichoderma hamatum, Trichoderma koningii, and Paecilomyces sp. were used as entomopathogenic against gram pod borer, through dipping and poison food methods under laboratory conditions. The entomopathogenic potential of different fungal strains revealed significantly (P<0.05 = 0.0000) highest mortality with B. bassiana (46.67%) follo wed by T. koningi (23.33%), T. virens (11.11%) and T. hamatum (8.33%) through dipping method. In case o f poison food method significantly highest mortality was recorded with T. koningi (20%) followed by B. bassiana (6.66%) after 24 h. The mortality with B. bassiana after 96 h was become higher (41.667%) compared with other strains. No mortality was recorded with Paecilomyces sp. and control (dipped in simple water) in both methods. It is obvious that microbial control agents are very effective and the promising entomopathogenic fungi of current study are hoped would be helpful for eco-friendly and alternative to chemical pesticides for sustainable management of H. armigera in chickpea.

A review on biological interactions and management of the cotton bollworm,Helicoverpa armigera(Lepidoptera: Noctuidae)

“…Entomopathogenic fungi are another ecologically friendly treatment for the management of H. armigera , although typically not as widely used against this species as bacterial‐based methods. They are also considered as an ecologically friendly alternative to more non‐specific synthetic insecticides and generally do not pose significant environmental concerns (Khaskheli et al., 2019; Kambrekar & Aruna, 2018). Beauveria bassiana (Balsamo) is a fungus from the order Hypocreales and is recognized as a ubiquitous and potent species with a wide host range (Jayewar & Sonkamble, 2015; Swathi et al., 2017).…”

“…A. Foster) Arx and T. hamatum (Bonord) Bainier showing much lower efficacy, at 11% and 8% mortality, respectively (Khaskheli et al., 2019). Finally, polyketide metabolite isolated from Streptomyces sp.…”