Utumi, Marley Marico, Pedro Henrique Monnerat, Paulo Roberto Gomes Pereira, Paulo Cézar Rezende Fontes, and Vicente de Paulo Campos Godinho. 1999. “Macronutrient Deficiencies in Stevia: Visual Symptoms and Effects on Growth, Chemical Composition, and Stevioside Production”. Pesquisa Agropecuaria Brasileira 34 (6):1039-43. https://doi.org/10.1590/S1678-3921.pab1999.v34.5285.