Mauad, M.; Crusciol, C. A. C.; Nascente, A. S.; Grassi Filho, H.; Corrêa, J. C. Silicon Content in the Shoots of Upland Rice Cultivars As Affected by the Application of Silicate and Limestone in the Soil. Semina: Ciênc. Agrár. 2013, 34, 2049-2060.