Optimizing nitrogen rate and planting density for sunflower under irrigated conditions of Punjab. SAARC Journal of Agriculture, [S. l.], v. 13, n. 1, p. 174–187, 2015. DOI: 10.3329/sja.v13i1.24190. Disponível em: https://www.banglajol.info/index.php/SJA/article/view/24190. Acesso em: 28 jun. 2026.