An experiment was carried out to study the evaluation of different sources of silicon on yield and chemical composition of maize at Department of Agric. Chemistry and Soil Science, B.A. College of Agric. Anand Agricultural University, Anand during April-June, 2012. The experiment was laid out in Factorial Completely Randomized design with three replications. Treatments consisted of four levels of organic and Calcium silicate. The results indicated that the FYM application at F5.0 level gave significantly higher green and dry shoot weight than F2.5 level and the green and dry shoot weight of maize were significantly increased with increasing levels of calcium silicate. N, P and S content in maize shoot also significantly influenced by application of different level of FYM and enriched FYM with PS whereas application of calcium silicate was found non-significant on N content, while the P and S content were significantly influenced with increasing levels of calcium silicate. Total uptake of nutrients viz., N, P and S was significantly influenced by application of FYM @ 5.0 t ha-1 over FYM @ 2.5 t ha-1 and calcium silicate at increasing levels gave significantly higher N, P and S uptake by maize than control.