| Registro completo |
| Provedor de dados: |
Rev. Bras. Ciênc. Solo
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| País: |
Brazil
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| Título: |
Phosphorus Forms in Ultisol Submitted to Burning and Trituration of Vegetation in Eastern Amazon
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| Autores: |
Farias,Samuel Christian Cohen
Silva Júnior,Mário Lopes da
Ruivo,Maria de Lourdes Pinheiro
Rodrigues,Possidônio Guimarães
Melo,Vânia Silva de
Costa,Adriane da Rocha
Souza Júnior,João Cardoso de
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| Data: |
2016-01-01
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| Ano: |
2016
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| Palavras-chave: |
Shifting cultivation
Tropical soils
Phosphorus fractions
Organic phosphorus
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| Resumo: |
ABSTRACT The use of fire to prepare agricultural areas is a technique still used by small farmers in eastern Amazon. This type of management changes the dynamics of soil nutrients, especially phosphorus, which constitutes the most limiting nutrient for crop production in tropical soils. This study was carried out to evaluate changes in phosphorus forms in an Argissolo Amarelo Distrófico (Ultisol) submitted to burning and trituration of secondary forest in eastern Amazon. The evaluated systems were: slash-and-burn of vegetation; slash-and-mulch of vegetation; and secondary vegetation. The labile, moderately labile, moderately recalcitrant, available and total phosphorus fractions were assessed at the soil depths of 0.00-0.05, 0.05-0.10 and 0.10-0.20 m. The results showed a predominance of soluble P in acid (moderately labile P) over other forms in all management systems. The management systems influence the content and distribution of the forms of P, where the slash-and-mulch system presented the prevalence of the labile fraction, and the slash-and-burn system contained less labile forms. The slash-and-mulch system favored the accumulation of labile P and total organic P.
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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=S0100-06832016000100506
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| Editor: |
Sociedade Brasileira de Ciência do Solo
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| Relação: |
10.1590/18069657rbcs20150198
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| Formato: |
text/html
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| Fonte: |
Revista Brasileira de Ciência do Solo v.40 2016
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| Direitos: |
info:eu-repo/semantics/openAccess
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