Seed treatment using silicon in good quality seeds is a practice for increasing productivity. The objective of this study was to evaluate the effect of coating rice seeds with two sources of silicon ontheir physiological, enzymatic and sanitary traits. This experiment used two rice cultivars, Irga 424 and Puitá Inta CL, and two sources of silicon, aluminum silicate and carbonized rice husk at doses of 0, 30, 60, 90 and 120g 100 kg-1 (of each applied product) of seed plus polymer and water, totaling a spray volume of 1L 100 kg-1 of seeds. The experimental design was completely randomized with four replications. The physiological quality of seeds was evaluated (LAS-FAEM \ UFPel) by germination, first count, length of shoot and root, cold test and field emergence. For isoenzyme differentiation, the following isoenzymes were analyzed: esterase, glutamate oxaloacetate transaminase and peroxidase, for all treatments. The sanitary quality of seeds was evaluated using the filter paper method or "Blotter Test". Increasing doses of carbonized rice husk and aluminum silicate up to g 100 to 120 kg-1 seed incrementedrice seed vigor assessed by the root length and field emergence. The sources of carbonized rice husk and kaolin control the incidence of soil fungi in rice seeds.
carbonized rice husk; kaolin; Oryza sativa L.
