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dc.contributor.authorTiecher, Talespt_BR
dc.contributor.authorTiecher, Tadeu Luispt_BR
dc.contributor.authorMallmann, Fábio Joel Kochempt_BR
dc.contributor.authorZafar, Mohsinpt_BR
dc.contributor.authorCeretta, Carlos Albertopt_BR
dc.contributor.authorLourenzi, Cledimarpt_BR
dc.contributor.authorBrunetto, Gustavopt_BR
dc.contributor.authorGatiboni, Luciano Colpopt_BR
dc.contributor.authorSantos, Danilo Rheinheimer dospt_BR
dc.date.accessioned2018-07-28T02:46:25Zpt_BR
dc.date.issued2017pt_BR
dc.identifier.issn0100-0683pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/180768pt_BR
dc.description.abstractIn Southern Brazil, agricultural soils are often treated over long periods with annual pig slurry (PS) applications, and their influence on soil nutrient dynamics should be monitored. This study aimed to evaluate the P forms accumulated in the soil and some biological and biochemical parameters of the P cycle after 19 successive PS applications over eight years, in a no-tillage (NT) system. Pig slurry was applied at rates of 0, 20, 40, and 80 m3 ha-1 per crop. Several P forms (available P, microbial P, phosphatase enzyme, total organic and inorganic P) in the 0.00-0.05 and 0.05-0.10 m soil layers were analyzed. Increases up to 5,523 % in available P, 308 % in microbial P, 104 % in phosphatase enzyme activity, 91 % in organic P, 251 % in inorganic P, and 19 % in Total-P were observed in the 0.00-0.05 m soil layer in response to the highest PS rate compared to the treatment with no PS. Results also indicated that P added via PS was preferentially accumulated in the inorganic fractions (83-98 %). The increase in organic P was limited by the increase in soil organic carbon. The increase in soil microbial biomass-P was more influenced by available P, while the increase in phosphatase enzyme activity was more related to the increase in organic P and C. Therefore, PS applied to the soil affected the chemical, biological, and biochemical components of the soil P cycle. Results indicate that even half of the PS rate normally used by farmers (20 m3 ha-1) poses a high risk of pollution of water bodies by runoff from these soils.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofRevista brasileira de ciencia do solo. Viçosa. Vol. 41 (2017), [art.] e170037pt_BR
dc.rightsOpen Accessen
dc.subjectOrganic phosphorusen
dc.subjectFósforopt_BR
dc.subjectInorganic phosphorusen
dc.subjectQuímica do solopt_BR
dc.subjectEstercopt_BR
dc.subjectMicrobial biomass phosphorusen
dc.subjectAcid phosphataseen
dc.titleChemical, biological, and biochemical parameters of the soil P cycle after long-term pig slurry application in no-tillage systempt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001060130pt_BR
dc.type.originNacionalpt_BR


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