CONRADIE, W. Utilisation of Nitrogen by the Grape-vine as Affected by Time of Application and Soil Type. South African Journal of Enology and Viticulture, [S. l.], v. 7, n. 2, p. 76–83, 2017. DOI: 10.21548/7-2-2331. Disponível em: https://www.journals.ac.za/sajev/article/view/2331. Acesso em: 5 mar. 2026.