| Registro completo |
| Provedor de dados: |
Bragantia
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| País: |
Brazil
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| Título: |
Phosphorus fractions in apple orchards in southern Brazil
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| Autores: |
Schmitt,Djalma Eugênio
Brunetto,Gustavo
Santos,Elaine dos
Wagner,Winiciu de Lima
Sete,Paula Beatriz
Souza,Monique
Ambrosini,Vítor Gabriel
Santos,Matheus Ademir dos
Tiecher,Tales
Comin,Jucinei José
Couto,Rafael da Rosa
Gatiboni,Luciano Colpo
Giachini,Admir
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| Data: |
2017-07-01
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| Ano: |
2017
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| Palavras-chave: |
Apple orchard
Phosphate fertilization
P chemical fractionation
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| Resumo: |
ABSTRACT Phosphorus (P) applications at dosages higher than the necessary may cause P buildup in the soil labile fractions and, consequently, pollution of water sources. This study aimed to assess accumulation of P fractions as well as the parameters of adsorption isotherms in soil profiles having a history of application of phosphate fertilizers and cultivated with apple trees. Soil samples were collected from an area with no history of cultivation and 2 apple orchards cultivated for 8 (P8) and 18 (P18) years, in the city of Urubici, Santa Catarina, southern Brazil. Soil samples were air dried, sieved in a 2-mm mesh, and subjected to chemical analyses (P adsorption) besides P chemical fractionation. Applications of phosphate fertilizers to the orchards, particularly P18, increased the inorganic and organic concentrations of P in all fractions. The distribution of P in organic and inorganic forms in the planted soils was similar to the distribution observed for the native vegetation soil. The highest inorganic labile P fraction, the lowest maximum P adsorption capacity, and the highest equilibrium concentration values at P18 are indicators of a higher environmental pollution risk of the orchards soils compared to the native soil.
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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=S0006-87052017000300422
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| Editor: |
Instituto Agronômico de Campinas
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| Relação: |
10.1590/1678-4499.173
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| Formato: |
text/html
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| Fonte: |
Bragantia v.76 n.3 2017
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| Direitos: |
info:eu-repo/semantics/openAccess
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