SHARANAPPA, SHARANAPPA; SHIVARAJ, B. Uptake of nitrogen, phosphorus, potassium and sulphur by rice (Oryza sativa) and sunflower (Helianthus annuus). The Indian Journal of Agricultural Sciences, Delhi, India, v. 67, n. 12, 2013. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/30088. Acesso em: 29 oct. 2025.