Growth of tropical tree species and absorption of copper in soil artificially contaminated

Abstract

Reclamation of copper contaminated sites using forest species may be an efficient alternative to reduce the negative impact. The aim of this study was to quantify the growth and evaluate the quality of seedlings of native species at different doses of copper in the soil. The experimental design was completely randomized, with seven replications in a factorial arrangement (3×9), using three indigenous species of plants (Anadenanthera macrocarpa, Mimosa scabrella and Apuleia leiocarpa) and nine doses of copper in the soil (0, 60, 120, 180, 240, 300, 360, 420 and 480 mg kg-1).The experiment was carried out in a greenhouse which the seedlings were grown for 180 days. The experimental units were plastic pots of 125 cm3 filled with Oxisol. The results indicated that the levels of copper applied to the soil decreased the quality of seedlings and growth of Apuleia leiocarpato a lesser extent compared with Mimosa scabrella and Anadenanthera macrocarpa. Anadenanthera macrocarpa was the forest species that resulted in the lowest copper translocation from roots to shoots. In addition, the Apuleia leiocarpa exhibited high resistance and tolerance for copper in the soil and also, it is highlighted an ability for copper phytoremediation.

Assessment of phytoremediation potencial of Allium cepa L. in raw sewage treatment

“…In this sense, Kumwimba et al (2017), studying the phytoremediation of domestic sewage with different plants, confirmed accumulation of aluminum, cadmium, arsenic, lead, chromium, iron and nickel in their roots. Silva et al (2015) showed that the levels of copper applied to the soil decreased the quality of seedlings and growth of Apuleia leiocarpa.…”

“…Phytoremediation provides huge environmental benefits at a cost lower than physicochemical methods. This area of study has gained momentum in the last ten years, with the discovery of the biotransformation capacity that plant roots have over exogenous organic molecules Baracuhy et al, 2015;Silva et al, 2015;Freitas et al, 2018).…”

Cultivation of sorghum and sunflower in soils with amendment of sludge from industrial landfill

“…Nevertheless, the translocation factor (TF) of Cu was correlated negatively with the stem diameter (-0.81) and the biomass of the roots (-0.75). Cu is an essential micronutrient, even though it can be toxic above certain levels (Barbosa et al 2013;Andreazza et al 2015;Silva et al 2015). Cadmium (Cd) in the shoots of sunflower had negative correlations with stem diameter (-0.69) and the biomass production of the roots (-0.63).…”