Control of Earias vittella (Lepidoptera: Noctuidae) by Beauveria bassiana along with Bacillus thuringiensis

Abstract

A laboratory strain of Beauveria bassiana sensu lato (Balsamo) Vuillemin (Hypocreales: Clavicipitaceae) and commercial formulation of Bacillus thuringiensis (Berliner) were assessed against three field populations of Earias vittella F. ) were applied alone and in combination against 2 nd and 4 th larval instars. The mortality was observed until pupation. The bioassays were carried out at 25°C and 75% RH The highest larval mortality was observed in the population from Faisalabad with lowest pupation rate, adult emergence and egg eclosion treated with combined concentrations of B. bassiana and B. thuringiensis. The lowest mortality was observed in population from Pakpattan among all the tested populations. Overall results demonstrated that all the treatments gave significant control of E. vittella and both microbial agents may become the integral part of the successful IPM program of E. vittella in okra crop.

Evaluation of insecticidal activity of entomopathogenic bacteria Photorhabdus and Xenorhabdus against shoot and fruit borer Earias vittella (Lepidoptera: Noctuidae) of vegetable crops

“…E. vittella has developed resistance against insecticides that are used to control them and to overcome this problem researchers has to concentrate on biological means like microbial agents for development of biopesticides for control of insect pests [19] . Biocontrol efficiency of Bt in combination with Beauvaria bassiana against larvae of Earias vittella and recorded 100% mortality when treated with Bt and B. bassiana in the combination of 0.5µg /g and 1.58x10 8 conidia / ml, respectively [20] . Pazhanisamy and Archunan [21] had used biological extracts like neem leaf extract (NLE) 5%, Prosophis leaf extract 5%, Calotropis leaf extract 5%, Pungam oil 3% Neem seed kernel extract (NSKE) 5% and panchagavya for biocontrol of Earias vittella.…”

Model Application of Entomopathogenic Fungi as Alternatives to Chemical Pesticides: Prospects, Challenges, and Insights for Next-Generation Sustainable Agriculture

“…These fungal species together with other known hypocrealean fungi, such as I. fumosorosea , M. brunneum , M. robertsii , and Hirsutella thompsonii Fisher, are commonly used against a broad range of arthropod pests ( Dara, 2019b ). They are mostly applied through inundative approaches ( Bamisile et al, 2018b ; Jaber and Araj, 2018 ) and have been reported to be effective against several insects of different feeding guilds including aphids, locusts, thrips ( Gulzar et al, 2021 ), grubs ( Wakil et al, 2017 ; Yasin et al, 2019 ), moths ( Ali et al, 2015 ; Tahir et al, 2019 ), mites, mosquitoes, whiteflies, and tephritid fruit flies ( Dong et al, 2016 ; Bamisile et al, 2020 ; Canassa et al, 2020 ; Usman et al, 2020 ). Additionally, EPF have been found to be pathogenic against phytopathogenic nematodes and other soil-borne pests ( Pocasangre et al, 2000 ).…”

Immunological mechanisms of synergy between fungus Metarhizium robertsii and bacteria Bacillus thuringiensis ssp. morrisoni on Colorado potato beetle larvae

“…For example, these effects were observed during combined fungal infection (Beauveria, Metarhizium) and bacteriosis (Bacillus thuringiensis, Pseudomonas sp.) on Musca domestica (Mwamburi et al, 2009), Ostrinia furnacalis , Locusta migratoria (Lednev et al, 2008), Helicoverpa armigera (Wakil et al, 2013), Sesamia nonagrioides (Mantzoukas et al, 2013), Earias vittella (Ali et al, 2015), and Leptinotarsa decemlineata (Kryukov et al, 2009;Wraight and Ramos, 2005). The majority of mixed infection studies are related to identifying methods to enhance bioinsecticide efficacy.…”