An improvement in soil chemical properties and crop development with silicate application has been confirmed in several plant species. The effects of silicate application on soil chemical properties and wheat growth were investigated in the present study. The experiment was carried out in 8-L plastic pots in a greenhouse. Treatments were arranged in a randomized block design in a 3 × 5 factorial: three soils [Rhodic Acrudox (Ox1) ) and Al 3+ phytotoxic; and increases the soil pH, available Ca, Mg and Si, cation exchange capacity (CEC) and soil base saturation. Silicate application did not affect the available P, exchangeable K and availability of micronutrients (Cu, Zn, Fe and Mn) in the three soils. The application of calcium/magnesium silicate in an acid clayey Rhodic Hapludox improves the development and yield of wheat; however, the silicate application in soil with pH higher to 5.3 and high Si availability does not affect the agronomic characteristics and grain yield of wheat. ) e Al 3+ fitotóxico; e aumenta o pH do solo, Ca, Mg e Si disponível, capacidade de troca catiônica (CTC) e saturação por bases. Aplicação de silicato não afetou o P disponível, K trocável e disponibilidade de micronutrientes (Cu, Zn, Fe e Mn) nos três solos. A aplicação de silicato de cálcio/magnésio em um Latossolo Vermelho argiloso ácido melhora o desenvolvimento e a produtividade do trigo; no entanto, a aplicação de silicato em solos com pH superior a 5,3 e alta disponibilidade Si não afeta as características agronômicas e produtividade de grãos do trigo. Palavras-chave: Triticum aestivum L., silício, propriedades químicas, correção da acidez