SciELO - Scientific Electronic Library Online

vol.37 issue2Ruminal degradation of the biomass of grass hays genre Cynodon sppAgronomic valorisation of wastes generated from pulp industry author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links

  • Have no similar articlesSimilars in SciELO


Revista de Ciências Agrárias

Print version ISSN 0871-018X


FERNANDES, Rui et al. Application of municipal sewage sludge to agricultural land in shallow soils. Rev. de Ciências Agrárias [online]. 2014, vol.37, n.2, pp.221-231. ISSN 0871-018X.

Application of municipal sewage sludge to agricultural land, especially in shallow soils, demands to validate the maximum amount of heavy metal, monitoring its effects on soil and on crops. To achieve this goal, four farms, considered replicates, were chosen in Castro Verde region, to apply four experimental treatments (T1 - conventional fertilization (CF); T2 - subsoiling (S) + (CF); T3 - (S) + (CF) + sludge injection (SI) and T4 - (S) + recommended fertilization (RF) + (SI)), to get mixing effects of sludge injection with fertilization modalities. They were sown wheat (Triticum aestivum) and oat (Avena sativa) as test crops, and sewage sludge, containing heavy metals level according to law (MAOTDR, 2009), was furnished by Castro Verde sewage treatment plants. Results did not show any soil pollution by the metals Cd, Cr, Ni, Pb, Cu, Zn and Hg, and the treatments did not affect significantly (p>0.05) the crops. This study validated, at these particular conditions, heavy metals limits established by law to avoid health and environmental risks.

Keywords : agronomic valorization; Avena sativa; heavy metal; municipal sewage sludge; Triticum aestivum.

        · 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