| Registro completo |
| Provedor de dados: |
PAB
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| País: |
Brazil
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| Título: |
Remaining phosphorus content to determine phosphorus availability of the soils in Rio Grande do Sul
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| Autores: |
Rogeri,Douglas Antonio
Bortolon,Leandro
Gianello,Clesio
Amorim,Magno Batista
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| Data: |
2017-12-01
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| Ano: |
2017
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| Palavras-chave: |
Clay content
Phosphate buffer capacity
Phosphate fertilization
Phosphorus adsorption
Soil test
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| Resumo: |
Abstract: The objective of this work was to evaluate remaining P compared with soil clay content as a P buffer index to classify P extracted by the Mehlich-1 (M1) and Mehlich-3 (M3) methods in soils from the state of Rio Grande do Sul, Brazil. The experiment was carried out in a completely randomized design with five P2O5 rates (0, 50, 100, 200, and 400 mg kg-1) and two sucessive corn crops, and three replicates, in 20 representative soils of the state. P extracted by M1 and M3 before crop planting was adjusted to P contents in biomass, considering soil buffer capacity. The division of soils into different buffering classes, based on soil clay or remaining P, improved the capacity of estimating soil available P of both methods. However, there was no difference among the correlation coefficients obtained by classifying soils according to the evaluated indexes (remaining P or soil clay) for both M1 and M3 methods. Remaining P is a viable alternative to replace soil clay content to classify soil P extracted with the M1 and M3 methods.
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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=S0100-204X2017001201203
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| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
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| Relação: |
10.1590/s0100-204x2017001200009
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| Formato: |
text/html
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| Fonte: |
Pesquisa Agropecuária Brasileira v.52 n.12 2017
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| Direitos: |
info:eu-repo/semantics/openAccess
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