| Registro completo |
| Provedor de dados: |
Rev. Bras. Ciênc. Solo
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| País: |
Brazil
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| Título: |
Soil phosphorus dynamics and availability and irrigated coffee yield
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| Autores: |
Reis,Thiago Henrique Pereira
Guimarães,Paulo Tácito Gontijo
Furtini Neto,Antônio Eduardo
Guerra,Antônio Fernando
Curi,Nilton
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| Data: |
2011-04-01
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| Ano: |
2011
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| Palavras-chave: |
Coffee arabica L.
Phosphate fertilization
Phosphorus fractionation
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| Resumo: |
Research data have demonstrated that the P demand of coffee (Coffea arabica L.) is similar to that of short-cycle crops. In this context, the objective of this study was to evaluate the influence of annual P fertilization on the soil P status by the quantification of labile, moderately labile, low-labile, and total P fractions, associating them to coffee yield. The experiment was installed in a typical dystrophic Red Latosol (Oxisol) cultivated with irrigated coffee annually fertilized with triple superphosphate at rates of 0, 50, 100, 200, and 400 kg ha-1 P2O5. Phosphorus fractions were determined in two soil layers: 0-10 and 10-20 cm. The P leaf contents and coffee yield in 2008 were also evaluated. The irrigated coffee responded to phosphate fertilization in the production phase with gains of up to 138 % in coffee yield by the application of 400 kg ha-1 P2O5. Coffee leaf P contents increased with P applications and stabilized around 1.98 g kg-1, at rates of 270 kg ha-1 P2O5 and higher. Soil P application caused, in general, an increase in bioavailable P fractions, which constitute the main soil P reservoir.
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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=S0100-06832011000200019
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| Editor: |
Sociedade Brasileira de Ciência do Solo
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| Relação: |
10.1590/S0100-06832011000200019
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| Formato: |
text/html
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| Fonte: |
Revista Brasileira de Ciência do Solo v.35 n.2 2011
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| Direitos: |
info:eu-repo/semantics/openAccess
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