SciELO - Scientific Electronic Library Online

 
vol.30 issue2Alterations in soil surface roughness by tillage and rainfall in relation to water erosionPreliminary evaluation of acid mine drainage in Minas Gerais State, Brazil author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Revista Brasileira de Ciência do Solo

On-line version ISSN 1806-9657

Abstract

SILVA, Carlos Alberto et al. Heavy metals availability for corn cultivated in a Latosol sucessively amended with sewage sludges. Rev. Bras. Ciênc. Solo [online]. 2006, vol.30, n.2, pp.353-364. ISSN 1806-9657.  https://doi.org/10.1590/S0100-06832006000200015.

This study carried out in order to evaluate the effect of sewage sludge (from Barueri: industrial and residential sewage, and Franca (SP) State: residential sewage) doses on soil heavy metal contents and their availability to corn. Three successive experiments were installed in a Latosol at the Experimental Field of Embrapa Environment, in Jaguariúna (SP), from 1999 to 2001. The treatments investigated consisted of: control (without sewage sludge); mineral fertilization (NPK) recommended for corn; and application of both sewage sludge sources to supply one, two, four and eight times the N dose applied in the NPK treatment. It was quantified the total (soil, leaf and grain) and available (DTPA and Mehlich-1) contents of Cu, Mn, Ni, Pb and Zn. Barueri sludge application increased the heavy metal contents extracted by DTPA solution. The total contents of heavy metals in soil are higher in plots fertilized with Barueri sewage sludge in relation to those quantified in areas treated with Franca sludge. When leaf and grain are analyzed, DTPA and Mehlich-1 solutions are effective in predicting the availability of Zn to corn plants.

Keywords : biosolid; heavy metal; chemical extractant; phytoavailability; Zea mays L.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License