VASUDEVAN, S. N., VIRUPAKSHAPPA, K., VENUGOPAL, N., & BHASKAR, S. (2013). Response of sunflower (Helianthus annuus) to phosphorus, sulphur, micronutrients and humic acid under irrigated condition on red sandy-loam soil. The Indian Journal of Agricultural Sciences, 67(3). https://epubs.icar.org.in/index.php/IJAgS/article/view/29858