_____________________________________________________________________________________________________ ++ M.Sc. Scholar; # Assistant Professor; *Corresponding author: E-mail: bhakherrenuka@gmail.com; Int. J. Plant Soil Sci., vol. 35, no. 9, pp. 153-159, 2023 International Journal of Plant & Soil Science Volume 35, Issue 9, Page 153-159, 2023; Article no.IJPSS.98754 ISSN: 2320-7035 Response of Sulphur and Foliar Application of Nano Urea on Growth and Yield of Sunflower (Helianthus annus L.) Renuka Bhakher a++* , Victor Debbarma a# and Jigyasa Ninama a++ a Department of Agronomy, Sam Higginbottom University of Agriculture, Technology and Sciences Prayagraj-211007, Uttar Pradesh, 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/v35i92916 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/98754 Received: 02/02/2023 Accepted: 10/04/2023 Published: 18/04/2023 ABSTRACT The field experiment entitled “response of sulphur and foliar application of nano urea on growth and yield of sunflower” was conducted during Summer, 2022 at Crop Research Farm, Department of Agronomy, Naini Agriculture Institute, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, Uttar Pradesh. The result showed that maximum diameter of capitulum (14.85 cm), number of seeds/capitulum (453.67), test weight (44.58 g), seed yield (1.70 t/ha), oil content (37.73 %) and B:C ratio (2.54) were obtained by the application of Sulphur at the rate 40 kg/ha along with Nano urea (3ml/l) in treatment 8 whereas higher plant height (118.83 cm), plant dry weight (70.08 g) and stover yield (3.36 t/ha) were obtained by the application of Sulphur at the rate 40 kg/ha along with Nano urea 4ml/l in treatment 9. Original Research Article