In:
Egyptian Journal of Biological Pest Control, Springer Science and Business Media LLC, Vol. 33, No. 1 ( 2023-01-26)
Abstract:
Insect pests cause substantial agriculture losses annually, and their regulation through chemical pesticides instigates a prolonged detrimental impact on the environment and human health. The upsurge in difficulties such as pesticide residue, soil degradation and pest resistance acted as the pacesetter for research on biological control with a prime focus on entomopathogens. To aid in knowing the biocontrol potential of these creatures, the present work deals with the applications of entomopathogenic nematode Heterorhabditis bacteriophora EUPT-SD, and entomopathogenic bacteria (EPBs) Photorhabdus luminescens and Bacillus thuringiensis var. kurstaki against the 4th larval instar of Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae) in the laboratory experiment, polyhouse as well as field condition. Results The results demonstrated that EPB, P. luminescens , caused the highest 100% larval mortality at the highest concentration of 5 × 10 2 CFU/ml after 96 h of infection, followed by B. thuringiensis var. kurstaki which resulted in 98% at a concentration of 5 × 10 2 CFU/ml and 92% mortality at the treatment with H. bacteriophora EUPT-SD (140IJs/ml) under laboratory bioassay study. In the polyhouse and field evaluation tests, again the P. luminescens was recorded as the most effective, followed by B. thuringiensis and H. bacteriophora , respectively. It was found that the treated plots experienced lesser damage when compared to non-treated plots. Conclusion Applications of these pathogens are nature friendly and are a proficient alternative to synthetic chemical insecticides. It is suggested from the present investigation that the use of P. luminescens was the best biocontrol agent to overcome the local pest problems of this region because it is safe for animals, humans, non-target insect pests, plants, as well as for the environment.
Type of Medium:
Online Resource
ISSN:
2536-9342
DOI:
10.1186/s41938-023-00649-4
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2023
detail.hit.zdb_id:
2568848-0
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