%0 Journal Article
%T Lodo de esgoto como fonte de nitrog¨ºnio: concentra£¿£¿o no perfil do solo e em plantas de milho
%A Macedo
%A Fernando Giovannetti de
%A Melo
%A Wanderley Jos¨¦ de
%A Merlino
%A Luciana Cristina Souza
%A Torres
%A Luma Stefania
%A Guedes
%A Ana Carolina Trisltz Perassolo
%A Melo
%A Gabriel Mauricio Peruca de
%A Camacho
%A Marcos Ant£¿nio
%J Engenharia Sanitaria e Ambiental
%D 2012
%I Brazilian Association of Sanitary and Environmental Engineering
%R 10.1590/S1413-41522012000300002
%X the aim of this study was to evaluate the concentration of nitrogen in corn plants and along the profile of an oxisol subjected to doses of sewage sludge and mineral fertilizer. the experiment was conducted in randomized complete block design with 4 treatments (0.0; 55.0; 110.0 and 167.5 mg.ha-1 of sewage sludge accumulated doses) and 5 reps for a trial period of 1 year. soil sampling was performed 60 days after emergence (d.a.e.) plants at depths 0-0.1, 0.1-0.2, 0.2-0.4, 0.4-0.6, 0.6-0.8 and 0.8-1.0 m. also at 60, 80 and 128 d.a.e. were collected, respectively, diagnosis leaf, whole plant and grain. higher doses of sewage sludge provided higher amounts of nitrogen in the soil. the soil nitrogen, after the depth of 0.6 m, did not differ between the layers evaluated. the higher the dose of sewage sludge, the lower the proportion of nitrogen in depth.
%K organic fertilizer
%K biossolids
%K environmental pollution.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1413-41522012000300002&lng=en&nrm=iso&tlng=en