1.
NARAYANA BS, RAJU AS. Effect of source and level of sulphur on yield and sulphur content of plant parts of sunflower (Helianthus annuus). Indian J Agri Sci. 2013;64(3). Accessed October 29, 2025. https://epubs.icar.org.in/index.php/IJAgS/article/view/29068