The effect of lead application on nutrient and Pb content and accumulation in ipê-roxo (Tabebuia impetiginosa (Mart.) Standl.) seedlings was studied in an experiment conducted under greenhouse conditions at the Soil Science Department of the Federal University of Lavras. The seedlings were cultivated in Clark nutrient solution and submitted to increasing Pb levels: 0, 48, 96, 192 and 288 mumol/l. The experiment was arranged in a randomized block design and after 60 days of exposure to the heavy metals, evaluations of macro and micronutrient and lead content and accumulation in the root, stem and leaf dry matter were made. The results showed that lead application increased P content and practically did not affect S, Ca and Mg contents. Cu, Fe and Mn contents, in general, presented a reduction; Zn content was not affected while macro and micronutrient accumulation was reduced. Lead content and accumulation in the root, stem and leaf dry matter increased with the doses applied.
Native forest species; heavy metal; plant nutrition and toxicity
