BABU, SUBHASH; RANA, D S; YADAV, G S; ANSARI, M A. Residual effect of sunflower (Helianthus annuus) stover and P management and direct effect of N and P on productivity, nutrient uptake and economics of spring sunflower. The Indian Journal of Agricultural Sciences, Delhi, India, v. 83, n. 3, 2013. DOI: 10.56093/ijas.v83i3.28340. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/28340. Acesso em: 29 jun. 2026.