RAJ, BALDEV; SINGH, TEJ; SINGH, HARBIR. 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, Delhi, India, v. 69, n. 2, 2013. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/26326. Acesso em: 28 oct. 2025.