The potency of the green algae Chlorella vulgaris and Bacillus thuringiensis as biocides against Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) | Functional Foods in Health and Disease - Online ISSN: 2160-3855; Print ISSN: 2378-7007 Skip to main content Skip to main navigation menu Skip to site footer Open Menu Functional Foods in Health and Disease - Online ISSN: 2160-3855; Print ISSN: 2378-7007 Home Food Science Publisher Functional Food Center Current Archives About About the Journal Aims and Scope Contact Editing Services Editorial Team Express Peer Review Graphical Abstract Journal Insights Privacy Statement Submissions Announcements Search Search Register Login Home / Archives / Vol. 14 No. 6 (2024): June 2024 / Research Articles The potency of the green algae Chlorella vulgaris and Bacillus thuringiensis as biocides against Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) Authors Abeer Mohammad Abdel-Rahim Elham Ashjan F. Khalel Heba Y. Ahmed DOI: https://doi.org/10.31989/ffhd.v14i6.1359 Abstract Background: Nowadays, the fall armyworm, Spodoptera frugiperda (J.E. Smith) FAW, is the most *destructive crop pest invading maize in different countries. Objective: This study holds significant implications for the field of pest management. It aims to assess the efficacy of crude algal extract of Chlorella vulgaris and Bacillus thuringiensis strain against the 2nd and 4th larval stages of the fall armyworm, a pest currently causing significant damage to maize crops. Methods: A rigorous research process was followed, using serial concentrations of bioagents to determine the mortality percent and LC50 values via a feeding technique. Results: Regarding the effect on the biological aspects, LC50 values were fed to the 2nd and 4th larval instar. In addition, histological investigations were checked. The results indicated that the high mortality percents were 90% and 60 % at the concentrations of 20000 ppm of algal extract, recording LC50 values of 10027.42 and 15805.06 ppm for the 2nd and 4th larval instar, respectively. Furthermore, bacterial strains induced 100% and 60 % mortality at the concentrations of 1000 ppm with LC50 values of 232.50 and 883.46 ppm for the 2nd and 4th larval instar, respectively. Moreover, feeding these compounds caused alterations in the mid-gut tissue and disturbances in the life cycle of the fall armyworm. Conclusions: The algal extract and the bacterial strain have demonstrated a significant toxic impact on the fall armyworm and could be involved in the integrated management protocol of this pest. Keywords: Chlorella vulgaris, Bacillus thuringiensis, fall armyworm, Biological control Downloads [Abstract] [Full Article] Published 2024-06-22 Issue Vol. 14 No. 6 (2024): June 2024 Section Research Articles License Copyright (c) 2024 Functional Foods in Health and Disease This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. Authors retain the copyright of their articles and grant the Functional Food Center (FFC) and its journals the right of first publication under the terms of the Creative Commons Attribution 4.0 International License. This license permits unrestricted use, distribution, and reproduction in any medium, including commercial use, provided the original author(s) and source are properly credited. Authors may post and share their published work freely, provided that the original publication in this journal is acknowledged. By submitting to this journal, authors confirm that their manuscripts are original, not under consideration elsewhere, and that they hold the necessary rights to grant this license. The Functional Food Center encourages open scientific exchange and allows derivative and extended works, provided attribution to the original publication is maintained. About the Journal      Editing Services      Graphical Abstract      Journal Insights        Submissions        Editorial Team       Privacy Statement        Contact        Current        Archives   Open Journal Systems Hosting and Support by: OpenJournalSystems.com