Jugal K. Malav, K. C. Patel, O. P. Meena, Vinod B. Mor and A. N. Chaudhary
Abstract
Status of available nutrients (P, K, S and Na) in harvested rice as influenced by silicon fertilization in Typic Ustochrepts soil was studied in a pot experiment at the Anand Agricultural University, Anand, Gujarat, India, during kharif 2010. The treatments comprised of four levels of silicon (0, 100, 200 and 300 mg kg-1 soil) and were laid out in factorial completely randomized design and rice (CV. Gurjari) was taken as a test crop with three replicates. Among the different levels of silicon, 200 mg Si kg-1 soil significantly increased P, K, S and Na status of soil after rice harvest in low Si (<25 mg Si kg-1 soil) and medium Si (25-50 mg Si kg-1 soil) soils categories. While, in high Si category soil (>50 mg Si kg-1 soil) significant response was obtained at lower dose of Si application i.e. 100 mg Si kg-1 soil. However, nutrient status reduced after further increase in Si rate.