_____________________________________________________________________________________________________ *Corresponding author: E-mail: nilesh@ubkv.ac.in; Int. J. Plant Soil Sci., vol. 35, no. 19, pp. 1830-1839, 2023 International Journal of Plant & Soil Science Volume 35, Issue 19, Page 1830-1839, 2023; Article no.IJPSS.104814 ISSN: 2320-7035 Ameliorative Role of Boron on Morpho- physiological Characters of Mandarin Orange Seedlings under Aluminium Stress Condition Novin Chamling a , Nilesh Bhowmick a* , Binayak Chakraborty b , Abhas Kr. Sinha c , Puspendu Dutta d and Somnath Mandal e a Department of Pomology and Postharvest Technology, Uttar Banga Krishi Viswavidyalaya, Pundibari–736165, Cooch Behar, India. b Regional Research Station (Terai Zone), Directorate of Research, Uttar Banga Krishi Viswavidyalaya, Pundibari–736165, Cooch Behar, India. c Department of Soil Science & Agricultural Chemistry, Uttar Banga Krishi Viswavidyalaya, Pundibari–736165, Cooch Behar, India. d Department of Seed Science and Technology, Uttar Banga Krishi Viswavidyalaya, Pundibari–736165, Cooch Behar, India. e Department of Biochemistry, Uttar Banga Krishi Viswavidyalaya, Pundibari –736165, Cooch Behar, 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/IJPSS/2023/v35i193734 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/104814 Received: 20/06/2023 Accepted: 26/08/2023 Published: 09/09/2023 ABSTRACT Darjeeling mandarin orange is well known for its unique and delicious taste. It is also considered as one of the major cash crop of Darjeeling hills. But in recent past, the production has been declined drastically due to some of the biotic and abiotic factors. Acidic soils are mainly confined in this Original Research Article