KAPILA SHEKH AWAT; Y.S. SHIVAY. Effect of nitrogen sources, sulphur and boron levels on productivity, nutrient uptake and quality of sunflower (Helianthus annuus). Indian Journal of Agronomy, [S. l.], v. 53, n. 2, p. 129–134, 2001. DOI: 10.59797/ija.v53i2.4847. Disponível em: https://pub.isa-india.in/index.php/ija/article/view/4847. Acesso em: 24 jun. 2026.