Phosphorus bioavailability in soybean grown after pasture under different fertility regimes

Autores/as

  • Diogo Néia Eberhardt Companhia Nacional de Abastecimento
  • Thierry Becquer Institut de Recherche pour le Développement
  • Robélio Leandro Marchão Empresa Brasileira de Pesquisa Agropecuária
  • Pedro Rodolfo Vendrame Universidade Estadual de Londrina
  • Lourival Vilela Empresa Brasileira de Pesquisa Agropecuária
  • Edemar Joaquim Corazza Embrapa Informação Tecnológica
  • Maria de Fátima Guimarães Universidade Estadual de Londrina

DOI:

https://doi.org/10.5433/1679-0359.2017v38n2p571

Palabras clave:

Urochloa, Phosphorus availability, Phosphorus accumulation, Residual effect, No-tillage.

Resumen

The aim of this study was to evaluate the residual effect of phosphorus (P) fertilizer applied to an Urochloa decumbens cv. Basilisk pasture on the P bioavailability to the following soybean crop. Low-productivity pasture, planted on an Oxisol in an experimental field at Embrapa Cerrados, was divided into three strips, each of 1.5 ha and fertilized by broadcasting annual applications of 0, 20 and 40 kg ha-1 of P2O5 for four years. After the pasture was desiccate with herbicide, soybeans were sown and fertilized with 0, 50 and 100 kg ha-1 of P2O5 applied within each strip, making a total of nine (3x3) P treatments. Residual available P content (Mehlich-1 and resin) from the pasture fertilization was lower than from soybean fertilization. However, the bioavailable residual P from the pasture, determined by P accumulated in plants, production of dry matter and grain yield, had similar availability to inorganic P applied to the soybean. Early P fertilization applied to pasture is technically feasible and can be used to maintain the pasture: it is recommended to replace corrective fertilization for following soybean crops.

Biografía del autor/a

Diogo Néia Eberhardt, Companhia Nacional de Abastecimento

Engº Agrº Dr., Companhia Nacional de Abastecimento, CONAB, Cuiabá, MT, Brasil.

Thierry Becquer, Institut de Recherche pour le Développement

Pesquisador Dr., Institut de Recherche pour le Développement, IRD, Montpellier, France.

Robélio Leandro Marchão, Empresa Brasileira de Pesquisa Agropecuária

Pesquisador, Dr., Empresa Brasileira de Pesquisa Agropecuária, EMBRAPA Cerrados, Planaltina, DF, Brasil.

Pedro Rodolfo Vendrame, Universidade Estadual de Londrina

Prof. Dr., Departamento de Geociências, Universidade Estadual de Londrina, UEL, Londrina, PR, Brasil.

Lourival Vilela, Empresa Brasileira de Pesquisa Agropecuária

Pesquisador, Dr., Empresa Brasileira de Pesquisa Agropecuária, EMBRAPA Cerrados, Planaltina, DF, Brasil.

Edemar Joaquim Corazza, Embrapa Informação Tecnológica

Pesquisador, Dr., EMBRAPA Informação Tecnológica, Brasília, DF, Brasil.

Maria de Fátima Guimarães, Universidade Estadual de Londrina

Proª Drª, Departamento de Agronomia, UEL, Londrina, PR, Brasil.

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Publicado

2017-05-02

Cómo citar

Eberhardt, D. N., Becquer, T., Marchão, R. L., Vendrame, P. R., Vilela, L., Corazza, E. J., & Guimarães, M. de F. (2017). Phosphorus bioavailability in soybean grown after pasture under different fertility regimes. Semina: Ciências Agrárias, 38(2), 571–580. https://doi.org/10.5433/1679-0359.2017v38n2p571

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