Rice yields are either declining or stagnating in post green revolution era mainly due to imbalance in fertilizer use, soil degradation, mono-cropping and lack of suitable rice genotypes for low moisture adaptability, insect-pest and disease resistance (Prakash, 2010). This has led to the depletion of many plant nutrients including silicon. Though being the 2nd most abundant element in the earth crust (28%), many soils contain an inadequate supply or are naturally low in plant available silicon. Highly weathered tropical and subtropical soils typically oxisol and ultisol under intensive rice cropping are generally low in available Si content due to weathering, heavy desilication and crop removal (Haynes, 2017). Silicon is considered as a beneficial element for healthy growth and development of rice crop (Liu et al., 2013) and absorbed in large amounts that are several-fold greater than those of the other macronutrients (Savant et al., 1996). Si strengthens the plant, protects the plant against pests and diseases, increases crop production and quality, stimulates active immune systems of plants, increases plant nutrition, increase plant salt resistance and neutralizes heavy metal toxicity in acid soils. Si fertilizer has a double effect on the soil– plant system. Through strengthens plantprotective properties and reducing metal toxicity (Rao et al., 2017). Jawahar et al, (2015) reported decreased dead heart and white ear percent with different sources of silicon. In addition, silicon can enhance the grain quality of rice by reducing As (Gang et al. (2018) in grain and Pb content in rice plant (Gu et al., 2011). Silicon can prove to be essential component in intensive rice cultivation under high nitrogen by preventing drooping of leaves and lodging of the plant. Rice is a silicon accumulator, so adequate attention should be given to silicon nutrition. Silicon management portfolio includes silicon fertilization and recycling of silicon in rice crop residues. Therefore, Silicon management is essential for sustaining rice productivity in tropical and subtropical soils