| Registro completo |
| Provedor de dados: |
Bragantia
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| País: |
Brazil
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| Título: |
Phosphorus fractions in soil with a long history of organic waste and mineral fertilizer addition
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| Autores: |
Couto,Rafael da Rosa
Ferreira,Paulo Ademar Avelar
Ceretta,Carlos Alberto
Lourenzi,Cledimar Rogério
Facco,Daniela Basso
Tassinari,Adriele
Piccin,Rogério
Conti,Lessandro De
Gatiboni,Luciano Colpo
Schapanski,Denis
Brunetto,Gustavo
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| Data: |
2017-03-01
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| Ano: |
2017
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| Palavras-chave: |
Animal manure
Availability
P fractionation
Environmental contamination
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| Resumo: |
ABSTRACT Applications for long periods of organic animal waste as a source of nutrients to crops can contaminate the soil and the surface and subsurface waters. This study aimed to evaluate how the utilization of organic waste, after successive applications, affects P fractions in the soil and consequently environmental contamination. In an experiment conducted for 8 years, totaling 12 applications with pig slurry manure (PSM), liquid cattle manure (LCM), swine deep bedding (SDB), and mineral fertilizer (NPK), 460; 505; 1.111; and 535 kg P∙ha−1 were added to the soil through PSM, LCM, SDB, and NPK, respectively. In September 2012, soil samples were collected in the layers 0.0 – 0.04; 0.04 – 0.08; 0.08 – 0.12; 0.12 – 0.16; 0.16 – 0.20 m, prepared and subjected to a sequential chemical fractionation of P. The 12 applications of pig slurry, liquid cattle manure, swine deep bedding and NPK fertilizer for eight years (urea + triple superphosphate + potassium chloride) provided accumulations of P fractions in the soil that were above the necessary for a proper nutrition to plants considering the available P fractions (AER + organic NaHCO3 + inorganic NaHCO3) in the soil. In addition, they showed that the use of swine deep bedding, followed by pig slurry, means higher levels of available P fractions in the soil. In this sense, the establishment of a dosage of organic waste to meet the nitrogen need of crops is not an environmentally appropriate parameter. It may cause P accumulation in the soil, increased absorption ability of plants and soil support, contributing to environmental contamination.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100155
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| Editor: |
Instituto Agronômico de Campinas
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| Relação: |
10.1590/1678-4499.006
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| Formato: |
text/html
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| Fonte: |
Bragantia v.76 n.1 2017
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| Direitos: |
info:eu-repo/semantics/openAccess
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