ERONI TOLEDO PEREIRA
Abstract:
Plant growth can be influenced by several genetic and environmental factors, which are a set of conditions that directly or indirectly affect their growth, development and productivity. Aimed to evaluate silicon (Si) and Sulfur (S) extractors available in soils through correlations between Si and S in dry matter of rice plants. The experiment was carried out from September to January 2008 in a greenhouse in the Jatobá Campus of the Federal University of Goiás in Jataí, with the rice crop. Vessels containing 5 kg of horizon B of 4 types of cerrado soils were used: Haplus Cambisol Tb dystrophic; Orthotic Quartzarenic Neosol; Acrosseric Red Latosol; Dystroferric Red Latosol. The experimental design was a completely randomized factorial scheme (9 X 4 X 8) with four replications, 8 silicon sources plus a control, 4 soils and 8 silicon and sulfur extractors in the soil. Under the conditions of the experiment it can be concluded that acesita I AF was the least efficient source of silicon and sulfur for rice cultivation. Silica gel was the treatment with the highest leaf silicon content in the aerial part of rice. The association in ammonium acetate and acetic acid was promising in the determination of Si, so far it is possible to develop a method using the same extractor for silicon and sulfur.
