Avaliação do desempenho de mudas de Braquiarão com utilização de diferentes concentrações de escória de Siderurgia

Abstract

Phytoremediation is one of the tools of biotechnology, which uses plant systems for: degrade, extract, contain, or immobilize contaminants from soil and water. The remediation of contaminated soils refers to the reduction of the levels of contaminants to safe levels and consistent with the protection of human health, either preventing or hindering the spread of harmful substances to the environment. Currently in the world, the tendency is to give preference to in situ remediation techniques for presenting low cost and do not cause secondary contamination, which was observed in ex situ remediation. In Brazil, the use of this technology is still little known by the professionals involved in the environmental area, despite its climatic and environmental conditions favorable to the development of this process. Thus it becomes important to develop local research of plants that may be used for recovery of contaminated areas, or evaluating the performance of some cultures when subjected to this technology. In this paper focus is given to the performance of seedlings braquiarão with using difrentes doses of slag, trying to correlate the extraction of some macro and micronutrients by the plant, with concentrations of silicates employed in addition to assessing whether within the particle size classification were used if release of other promoter elements plant growth or not. The experiment was conducted at the Department of Environment of Maraba, in the period from March to June 2013. The results were submitted to analysis of variance and means were compared by Tukey test at 5%. It can be concluded that the grass growth occurred regardless of the increased availability of the element silicon in the soil, gradual increase of the dose of slag in soil affected the biomass production of shoots and roots, 03 in the treatment of radicular part B. Brizantha behaved differently from the other treatments did not show a pattern of gradual absorption of this element.