Data/hora: 02/06/2024 09:43:25

Provedor de dados: | 90
País: | Brazil
Título: | Phosphorus accumulation and pollution potential in a hapludult fertilized with pig manure
Autores: | Guardini,Renato; Comin,Jucinei José; Santos,Danilo Rheinheimer dos; Gatiboni,Luciano Colpo; Tiecher,Tales; Schmitt,Djalma; Bender,Marcos Antônio; Belli Filho,Paulo; Oliveira,Paulo Amando Victoria de; Brunetto,Gustavo.
Data: | 2012-08-01
Ano: | 2012
Palavras-chave: | Organic fertilization; Deep litter; Environmental contamination.
Resumo: | Successive applications of pig litter to the soil surface can increase the phosphorus (P) content and alter its adsorption, promoting P transfer to surface or subsurface waters. The purpose of this study was to evaluate P accumulation and the pollution potential of a soil after application of pig litter. In March 2010, eight years after the installation of an experiment in Braço do Norte, Santa Catarina, SC, Brazil, on a Typic Hapludult, soil was sampled (layers 0-2.5, 2.5-5, 5-10, 10-15, 15-20 and 20-30 cm) after the following fertilization treatments: no pig litter fertilization, pig slurry application and pig manure application. In this period, 694 and 1,890 kg P2O5 ha-1 were applied in the treatments with pig slurry and pig manure, respectively. The P content was determined, based on Mehlich-1, anion exchange resin (AER), 0.01 mol L-1 CaCl2 and total P in the samples. The adsorption isotherm parameters were also determined by the Langmuir and Koski-Vähälä &amp;amp; Hartikainem models in the layers 0-2.5 and 20-30 cm. The application of 1,890 kg P2O5 ha-1 in the form of pig manure led to P accumulation, as evidenced by Mehlich-1, down to a depth of 15 cm, by AER and 0.01 mol L-1 CaCl2 down to 20 cm and by total P to 30 cm. After application of 1,890 kg P2O5 ha-1 in the form of pig manure, the values of maximum P adsorption capacity were lowest in the deepest layer (20-30 cm), indicating the occupation of part of the adsorption sites of the particles. The application of swine manure to the soil over eight years increased the P quantity in the soil solution of the surface layer, indicating environmental contamination risk for surface and subsurface waters.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000400027
Editor: | Sociedade Brasileira de Ciência do Solo
Relação: | 10.1590/S0100-06832012000400027
Formato: | text/html
Fonte: | Revista Brasileira de Ciência do Solo  v.36 n.4 2012
Fonte: | info:eu-repo/semantics/openAccess