CONRADIE, W. J. Seasonal Uptake of Nutrients by Chenin Blanc in Sand Culture: II. Phosphorus, Potassium, Calcium and Magnesium. South African Journal of Enology and Viticulture, [S. l.], v. 2, n. 1, p. 7–13, 2017. DOI: 10.21548/2-1-2403. Disponível em: https://www.journals.ac.za/sajev/article/view/2403. Acesso em: 20 feb. 2026.