RAJ, B., SINGH, T. and SINGH, H. (2013) “Genotypes, irrigation and fertility effects on seed yield, water use and water-use efficiency of spring sunflower (Helianthus annuus)”, The Indian Journal of Agricultural Sciences, 69(2). Available at: https://epubs.icar.org.in/index.php/IJAgS/article/view/26326 (Accessed: 28 October 2025).