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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
25/02/2021 |
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Data da última atualização: |
25/02/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, L. E. Z.; NUNES, R. de S.; SOUSA, D. M. G. de; FIGUEIREDO, C. C. |
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Afiliação: |
RAFAEL DE SOUZA NUNES, CPAC; DJALMA MARTINHAO GOMES DE SOUSA, CPAC; Cícero Célio de Figueiredo. |
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Título: |
Dynamics of residual phosphorus forms under different tillage systems in a Brazilian Oxisol. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Geoderma, v. 367, 2020. |
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Idioma: |
Inglês |
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Conteúdo: |
Phosphorus (P) accumulation in soil, mainly from decades of agricultural use with frequent additions of phosphate fertilizers, results in a large reserve of this nutrient that can be exploited by farmers. However, the dynamics of soil P forms under the residual effect of phosphate fertilization is still little known. In an experiment located at Embrapa Cerrados, in Planaltina, DF, Brazil, corn or soybeans were grown during the summer for 17 years, receiving 35 kg of P ha−1 year−1. The same area was then cultivated with corn for 4 more years without the supply of this nutrient, in order to characterize the behavior of P fractions accumulated in the soil and identify those that contribute most to crop nutrition when phosphate fertilization is interrupted. Changes in total P (Pt), organic P (Po), inorganic P (Pi), and labile P extracted by the Bray-1, Mehlich-1 and Olsen methods (organic and inorganic) and organic carbon (C) were evaluated by means of samples obtained before and after cultivation without P fertilization in different soil layers subject to no-till (NT) or conventional tillage (CT), previously fertilized with reactive rock phosphate (RRP) or triple superphosphate (TSP) which were applied by broadcast spreading or band-applied to the planting row. The superficial layers were most responsible for crop nutrition in NT, especially in the mode of broadcast application, while in CT the relative contribution of each layer was less stratified. There was a drastic reduction in the stock of almost all P fractions, except for Po which showed an increase, notably in soil cultivated under CT (22% in the 0?10 cm layer), although the C content was reduced. This suggests that the little available inorganic fractions, partially replacing the labile fractions, were responsible for the supply of P to crops. This replacement was more effective in NT, since it could sustain greater P offtake by crops, despite the similar reductions in labile P fractions observed in both systems MenosPhosphorus (P) accumulation in soil, mainly from decades of agricultural use with frequent additions of phosphate fertilizers, results in a large reserve of this nutrient that can be exploited by farmers. However, the dynamics of soil P forms under the residual effect of phosphate fertilization is still little known. In an experiment located at Embrapa Cerrados, in Planaltina, DF, Brazil, corn or soybeans were grown during the summer for 17 years, receiving 35 kg of P ha−1 year−1. The same area was then cultivated with corn for 4 more years without the supply of this nutrient, in order to characterize the behavior of P fractions accumulated in the soil and identify those that contribute most to crop nutrition when phosphate fertilization is interrupted. Changes in total P (Pt), organic P (Po), inorganic P (Pi), and labile P extracted by the Bray-1, Mehlich-1 and Olsen methods (organic and inorganic) and organic carbon (C) were evaluated by means of samples obtained before and after cultivation without P fertilization in different soil layers subject to no-till (NT) or conventional tillage (CT), previously fertilized with reactive rock phosphate (RRP) or triple superphosphate (TSP) which were applied by broadcast spreading or band-applied to the planting row. The superficial layers were most responsible for crop nutrition in NT, especially in the mode of broadcast application, while in CT the relative contribution of each layer was less stratified. There was a dra... Mostrar Tudo |
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Thesagro: |
Adubação; Fósforo; Plantio Direto. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02566naa a2200193 a 4500
001 2130290
005 2021-02-25
008 2020 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, L. E. Z.
245 $aDynamics of residual phosphorus forms under different tillage systems in a Brazilian Oxisol.$h[electronic resource]
260 $c2020
520 $aPhosphorus (P) accumulation in soil, mainly from decades of agricultural use with frequent additions of phosphate fertilizers, results in a large reserve of this nutrient that can be exploited by farmers. However, the dynamics of soil P forms under the residual effect of phosphate fertilization is still little known. In an experiment located at Embrapa Cerrados, in Planaltina, DF, Brazil, corn or soybeans were grown during the summer for 17 years, receiving 35 kg of P ha−1 year−1. The same area was then cultivated with corn for 4 more years without the supply of this nutrient, in order to characterize the behavior of P fractions accumulated in the soil and identify those that contribute most to crop nutrition when phosphate fertilization is interrupted. Changes in total P (Pt), organic P (Po), inorganic P (Pi), and labile P extracted by the Bray-1, Mehlich-1 and Olsen methods (organic and inorganic) and organic carbon (C) were evaluated by means of samples obtained before and after cultivation without P fertilization in different soil layers subject to no-till (NT) or conventional tillage (CT), previously fertilized with reactive rock phosphate (RRP) or triple superphosphate (TSP) which were applied by broadcast spreading or band-applied to the planting row. The superficial layers were most responsible for crop nutrition in NT, especially in the mode of broadcast application, while in CT the relative contribution of each layer was less stratified. There was a drastic reduction in the stock of almost all P fractions, except for Po which showed an increase, notably in soil cultivated under CT (22% in the 0?10 cm layer), although the C content was reduced. This suggests that the little available inorganic fractions, partially replacing the labile fractions, were responsible for the supply of P to crops. This replacement was more effective in NT, since it could sustain greater P offtake by crops, despite the similar reductions in labile P fractions observed in both systems
650 $aAdubação
650 $aFósforo
650 $aPlantio Direto
700 1 $aNUNES, R. de S.
700 1 $aSOUSA, D. M. G. de
700 1 $aFIGUEIREDO, C. C.
773 $tGeoderma$gv. 367, 2020.
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Registro original: |
Embrapa Cerrados (CPAC) |
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| Registros recuperados : 8 | |
| 1. |  | MIQUELONI, D. P.; NEGREIROS, J. R. da S.; VARGAS, M. M. D.; GOMES, L. L. da S. Caracterização de acessos de Piper aduncum L. do banco ativo de germoplasma quanto aos atributos morfológicos. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2012, Belém, PA. Amazônia: recursos genéticos e sustentabilidade: anais. Brasília, DF: SBRG; Belém, PA: Embrapa Amazônia Oriental, 2012. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 2. | | NEGREIROS, J. R. da S.; MIQUELONI, D. P.; AZEVEDO, J. M. A.; GOMES, L. L. da S. Estudo morfológico de populações de Piper hispidinervum C.DC do banco ativo de germoplasma. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2012, Belém, PA. Amazônia: recursos genéticos e sustentabilidade: anais. Brasília, DF: SBRG; Belém, PA: Embrapa Amazônia Oriental, 2012. 4 p. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 3. | | GOMES, L. L.; CÓSER, A. C.; MARTINS, C. E.; ROCHA, W. S. D. da; MORENZ, M. J. F.; ALMEIDA, F. M.; STRADIOTTI JÚNIOR, D.; ALMEIDA JÚNIOR, G. A. Características agronômicas da grama Estrela Africana sob doses de nitrogênio, manejada em pastejo de vacas em lactação. In: CONGRESSO INTERNACIONAL DO LEITE, 13., 2015, Porto Alegre. Anais... Juiz de Fora: Embrapa Gado de Leite, 2015.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 4. | | ALMEIDA, F. M. dE; GOMES, L. L.; CÓSER, A. C.; MARTINS, C. E.; STRADIOTTI JÚNIOR, D.; MACHADO, T. J.; HUPP, A. C.; ROCHA, W. S. D. da. Avaliação de doses crescentes de nitrogênio sobre a massa de forragem e o valor nutritivo do capim Estrela Africana sob pastejo rotacionado. In: CONGRESSO BRASILEIRO DE ZOOTECNIA, 24., 2014, Vitória. Anais... Vitória: Universidade Federal do Espírito Santo, 2014. 3 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 5. | | MACHADO, W. K. R.; BARRIOS, S. C. L.; MATEUS, R. G.; VALLE, C. B. do; AMARAL, P. N. C. do; GOMES, L. L.; SANTOS, I. C. dos. Estimativa de parâmetros e correlações genéticas em híbridos de Brachiaria spp. para caracteres agronômicos e nutritivos. In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 9., 2017, Foz de Iguaçu. Melhoramento de plantas: projetando o futuro: resumos das palestras. p. 617| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 6. | | QUEIROZ JÚNIOR, J. M.; BARRIOS, S. C. L.; MATEUS, R. G.; SANTOS, I. C. dos; GONÇALVES, T. D.; GOMES, L. L.; VALLE, C. B. do. Seleção de híbridos superiores de Brachiaria decumbens para caracteres agronômicos. In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 9., 2017, Foz de Iguaçu. Melhoramento de plantas: projetando o futuro: resumos das palestras. p. 633| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 7. | | ALMEIDA, F. M. de; GOMES, L. L.; CÓSER, A. C.; MARTINS, C. E.; STRADIOTTI JÚNIOR, D.; BARIONI, G.; PAULA, H. de; MORENZ, M. J. F. Perfil metabólico de vacas leiteiras em pastagem de Estrela Africana sob doses crescentes de nitrogênio. In: CONGRESSO BRASILEIRO DE ZOOTECNIA, 24., 2014, Vitória. Anais... Vitória: Universidade Federal do Espírito Santo, 2014. 3 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 8. | | MENEZES. P. P. L.; FAJARDO, M. De F.; FOCHAT, R. C.; LEITE, I, C. G.; GOMIDE, C. P.; MACEDO, R. L.; PEREIRA, T. V.; SILVA, M. R.; BONIN, C. R.; GOMES, L. L. N.; COSTA, R. R. Da. Características sociodemográficas e clínicas de pacientes com tuberculose atendidos em um hospital de referência do estado de Minas Gerais. Revista Médica de Minas Gerais, v. 26, suppl. 5, p. S40-S46, 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 3 |
| Biblioteca(s): Embrapa Gado de Leite. |
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| Registros recuperados : 8 | |
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