_____________________________________________________________________________________________________ ++ Ph.D Scholar; # Associate Professor; *Corresponding author: E-mail: asa.kichu27@gmail.com; Int. J. Environ. Clim. Change, vol. 12, no. 12, pp. 1216-1221, 2022 International Journal of Environment and Climate Change Volume 12, Issue 12, Page 1216-1221, 2022; Article no.IJECC.95607 ISSN: 2581-8627 (Past name: British Journal of Environment & Climate Change, Past ISSN: 2231–4784) Bioassay on Toxicity of Plant Extracts against Aphis craccivora Koch (Hemiptera: Aphididae) in French Bean (Phaseolus vulgaris L.) Nokchensaba Kichu a++* , L. Imtinaro a# , Pankaj Neog a# and Limasunep Ozukum b++ a Department of Entomology, SASRD, Nagaland University, Medziphema Campus, Nagaland - 797106, India. b Department of Agricultural Economics, SASRD, Nagaland University, Medziphema Campus, Nagaland - 797106, India. Authors’ contributions This work was carried out in collaboration among all authors. All authors read and approved the final manuscript. Article Information DOI: 10.9734/IJECC/2022/v12i121561 Open Peer Review History: This journal follows the Advanced Open Peer Review policy. Identity of the Reviewers, Editor(s) and additional Reviewers, peer review comments, different versions of the manuscript, comments of the editors, etc are available here: https://www.sdiarticle5.com/review-history/95607 Received: 20/10/2022 Accepted: 28/12/2022 Published: 29/12/2022 ABSTRACT The present experimental study was conducted under laboratory conditions in the department of Entomology, School of Agricultural Sciences and Rural Development, Nagaland University, Medziphema Campus during 2017 to 2018. For bioassay on the toxicity of plant extract on Aphids (Aphis craccivora Koch) in French beans, five botanicals were used namely, Neem ( Azadirachta indica), Datura (Datura stramonium), Lantana (Lantana camara), Nigeria Eucalyptus (Eucalyptus globules) and Citronella (Cymbopogon winterianus) with one chemical i.e. Dimethoate 30 EC and Original Research Article