SARKAR, R.K. and MALLICK, R.B. (2011) “Effect of nitrogen, sulphur and foliar spray of nitrate salts on performance ofspring sunflower (Helianthus annuus)”, The Indian Journal of Agricultural Sciences, 79(12). Available at: https://epubs.icar.org.in/index.php/IJAgS/article/view/2554 (Accessed: 27 October 2025).