SAAYMAN, D. Soil Preparation Studies: II. The Effect of Depth and Method of Soil Preparation and of Organic Material on the Performance of Vitis vinifera (var. Colombar) on Clovelly/Hutton Soil. South African Journal of Enology and Viticulture, [S. l.], v. 3, n. 2, p. 61–74, 2017. DOI: 10.21548/3-2-2383. Disponível em: https://www.journals.ac.za/sajev/article/view/2383. Acesso em: 20 feb. 2026.