Erythrina crista-galli L. and peat in copper in soil phytoremediation

Phytoremediation is a technique that uses plants, associated or not with soil alleviation for the recovery of contaminated areas. The aim of this study was to evaluate the use of peat and Erythrina crista-galli in the phytoremediation of soil contaminated with copper. The work was conducted in a greenhouse for 120 days using a completely randomized design with six replications in a factorial arrangement (2 x 6): with absence and presence of peat (200 mL L-1 soil) and six doses the copper (0, 60, 120, 180, 240, 300 mg kg(-1)). The parameters evaluated were: seedling height, the stem diameter, root and shoot dry weight, the levels and the cumulative amount of copper in the root system and aerial part, the quality indices of Dickson, tolerance and translocation. The results showed that the addition of peat stimulated the growth of Erythrina crista-galli seedlings but did not act as a mitigation of soil contamination with copper. Erythrina crista-galli showed low copper phytoextraction potential.