SOIL LOSS AND CASSAVA YIELD UNDER RIDGE TILLAGE IN HUMID TROPICAL CLIMATE OF SUMATERA, INDONESIA . International Journal of Geomate, [S. l.], v. 18, n. 67, p. 1–7, 2020. Disponível em: https://geomatejournal.com/geomate/article/view/467. Acesso em: 3 oct. 2026.