PARVENDER SHEORAN; VIRENDER SARDANA; SHER SINGH; O.P. SHEORAN; DEV RAJ. Optimizing sulphur application in sunflower (Helianthus annuus) under irrigated semi-arid tropical conditions. Indian Journal of Agronomy, [S. l.], v. 58, n. 3, p. 384–390, 2001. DOI: 10.59797/ija.v58i3.4204. Disponível em: https://pub.isa-india.in/index.php/ija/article/view/4204. Acesso em: 14 jul. 2026.