GUHAN , M; KALAIYARASAN , C; ANANDAN, P; ELAYARAJA, D. Optimizing nano-nitrogen and conventional sulphur doses for enhanced growth and yield in sunflower (Helianthus annuus). The Indian Journal of Agricultural Sciences, Delhi, India, v. 96, n. 5, 2026. DOI: 10.56093/ijas.v96i4.167528. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/167528. Acesso em: 24 jul. 2026.