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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
26/05/2022 |
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Data da última atualização: |
26/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OLIVEIRA, L. E. Z. de; NUNES, R. de S.; FIGUEIREDO, C. C. de; REIN, T. A. |
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Afiliação: |
LUIZ EDUARDO ZANCANARO DE OLIVEIRA; RAFAEL DE SOUZA NUNES, CPAC; CÍCERO CÉLIO DE FIGUEIREDO; THOMAZ ADOLPHO REIN, CPAC. |
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Título: |
Spatial distribution of soil phosphorus fractions in a clayey Oxisol submitted to long-term phosphate fertilization strategies. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Geoderma, v. 418, 115847, 2022. |
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Idioma: |
Inglês |
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Conteúdo: |
Due to the strong interaction of phosphorus (P) with soil constituents, P fertilizer placement can significantly affect how crops take up this nutrient. Nonetheless, few studies address the spatial distribution of P at the rowinterrow scale according to management strategies. In a 16-yr no-tillage (NT) field experiment involving two different P fertilizer application methods (broadcast or band application) and two P sources (triple superphosphate ? TSP or reactive Gafsa phosphate rock-RPR), plus a control treatment, the spatial distribution of P fractions was assessed in two occasions: after the 8th and the 16th crops. This was done vertically to a depth of 30 cm and horizontally from the crop row to the center of the interrows. Broadcast treatments showed total and Mehlich-1 P accumulation at the soil surface while for band application this accumulation was in the crop row region. A small P movement down the soil profile was observed from the 8th to the 16th crop with broadcast application, whereas with band fertilizer this effect was more noticeable, showing increased soil volume under P fertilizer influence even without soil tillage; it is likely that this was partly due to biological P turnover and application at depth. After 16 crops, the soil volume under the influence of P fertilizer was greater under band application while the volume above Mehlich-1 P critical levels for the 0?20 cm layer in regional studies was higher under broadcast application, independent of the P source. Soil organic carbon (SOC) contents were not affected by P placement or source. However, a significant accumulation of SOC was seen from the soil surface downwards after the last eight crops. The spatial distribution of P and SOC was better correlated under broadcast treatments, with high values for both variables at the soil surface; this may explain similar yields to those obtained with band application, where P fertilizer is placed near the main roots in an attempt to reduce P adsorption to the soil solid phase MenosDue to the strong interaction of phosphorus (P) with soil constituents, P fertilizer placement can significantly affect how crops take up this nutrient. Nonetheless, few studies address the spatial distribution of P at the rowinterrow scale according to management strategies. In a 16-yr no-tillage (NT) field experiment involving two different P fertilizer application methods (broadcast or band application) and two P sources (triple superphosphate ? TSP or reactive Gafsa phosphate rock-RPR), plus a control treatment, the spatial distribution of P fractions was assessed in two occasions: after the 8th and the 16th crops. This was done vertically to a depth of 30 cm and horizontally from the crop row to the center of the interrows. Broadcast treatments showed total and Mehlich-1 P accumulation at the soil surface while for band application this accumulation was in the crop row region. A small P movement down the soil profile was observed from the 8th to the 16th crop with broadcast application, whereas with band fertilizer this effect was more noticeable, showing increased soil volume under P fertilizer influence even without soil tillage; it is likely that this was partly due to biological P turnover and application at depth. After 16 crops, the soil volume under the influence of P fertilizer was greater under band application while the volume above Mehlich-1 P critical levels for the 0?20 cm layer in regional studies was higher under broadcast application, independent of the ... Mostrar Tudo |
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Thesagro: |
Fósforo; Plantio Direto; Solo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02614naa a2200193 a 4500
001 2143493
005 2022-05-26
008 2022 bl uuuu u00u1 u #d
100 1 $aOLIVEIRA, L. E. Z. de
245 $aSpatial distribution of soil phosphorus fractions in a clayey Oxisol submitted to long-term phosphate fertilization strategies.$h[electronic resource]
260 $c2022
520 $aDue to the strong interaction of phosphorus (P) with soil constituents, P fertilizer placement can significantly affect how crops take up this nutrient. Nonetheless, few studies address the spatial distribution of P at the rowinterrow scale according to management strategies. In a 16-yr no-tillage (NT) field experiment involving two different P fertilizer application methods (broadcast or band application) and two P sources (triple superphosphate ? TSP or reactive Gafsa phosphate rock-RPR), plus a control treatment, the spatial distribution of P fractions was assessed in two occasions: after the 8th and the 16th crops. This was done vertically to a depth of 30 cm and horizontally from the crop row to the center of the interrows. Broadcast treatments showed total and Mehlich-1 P accumulation at the soil surface while for band application this accumulation was in the crop row region. A small P movement down the soil profile was observed from the 8th to the 16th crop with broadcast application, whereas with band fertilizer this effect was more noticeable, showing increased soil volume under P fertilizer influence even without soil tillage; it is likely that this was partly due to biological P turnover and application at depth. After 16 crops, the soil volume under the influence of P fertilizer was greater under band application while the volume above Mehlich-1 P critical levels for the 0?20 cm layer in regional studies was higher under broadcast application, independent of the P source. Soil organic carbon (SOC) contents were not affected by P placement or source. However, a significant accumulation of SOC was seen from the soil surface downwards after the last eight crops. The spatial distribution of P and SOC was better correlated under broadcast treatments, with high values for both variables at the soil surface; this may explain similar yields to those obtained with band application, where P fertilizer is placed near the main roots in an attempt to reduce P adsorption to the soil solid phase
650 $aFósforo
650 $aPlantio Direto
650 $aSolo
700 1 $aNUNES, R. de S.
700 1 $aFIGUEIREDO, C. C. de
700 1 $aREIN, T. A.
773 $tGeoderma$gv. 418, 115847, 2022.
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Embrapa Cerrados (CPAC) |
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| Registros recuperados : 295 | |
| 1. |  | DALMAGO, G. A. Indicadores de sustentabilidade em trigo. Cultivar, Pelotas, 26 nov. 2007. Também publicado: Criar e Plantar, 29 nov. 2007. Disponível em <http://www.criareplantar.com.br>.; Zoonews, 2 dez. 2007. Disponível em <http://www.zoonews.com.br/noticias2/noticia.php?idnoticia=128004>.| Tipo: Artigo de Divulgação na Mídia | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Trigo. |
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| 7. | | RADUNZ, A. L.; DALMAGO, G. A.; GOUVEA, J. A. de. Ambiente e herança epigenética na produção de sementes de trigo e de outros cereais de inverno. Informativo Abrates, v. 30, n. 1, p. 194, set. 2024. Edição dos resumos do 22º Congresso Brasileiro de Sementes, Foz do Iguaçu, PR, 2024. Trabalho 192.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Trigo. |
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| 8. | | LAZZAROTTO, A.; SCHEEREN, P. L.; DALMAGO, G. A.; BIFF, M. Concentrações de ferro e zinco em grãos de diferentes cultivares de trigo (Triticum aestivum L.) sob colheita manual e mecanizada. In: MOSTRA DE INICIAÇÃO CIENTÍFICA, 9.; MOSTRA DE PÓS-GRADUAÇÃO DA EMBRAPA TRIGO, 6., 2014, Passo Fundo. A construção de um cientista!: resumos. Brasília, DF: Embrapa, 2015. p. 27. Orientador: Pedro Luiz Scheeren.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Trigo. |
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| 10. | | DALMAGO, G. A.; SANTI, A.; DENARDIN, J. E.; BERGAMASCHI, H. O fenômeno "seca" sob enfoque agronômico. Cultivar, Pelotas, 12 nov. 2009. E em: Página Rural, 12-11-2009 e Portal do Agronegócio, 12-11-2009 e Agronline, 12-11-2009 e Agrolink, 12-11-2009 e SeedQuest, 12-11-2009 e ViaCampus, 2009 e Agrícola Cantelli, 12-11-2009.| Tipo: Artigo de Divulgação na Mídia |
| Biblioteca(s): Embrapa Trigo. |
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| 19. | | PASINATO, A.; DALMAGO, G. A.; SANTI, A.; CUNHA, G. R. da. Análise agrometeorológica da safra de soja 2007/2008, em Passo Fundo, RS. In: COSTAMILAN, L. M.; BERTAGNOLLI, P. F. (Org.). Soja: resultados de pesquisa 2007/2008. Passo Fundo: Embrapa Trigo, 2008. p. 11-23. (Embrapa Trigo. Documentos, 86).| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Trigo. |
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| 20. | | PASINATO, A.; DALMAGO, G. A.; SANTI, A.; CUNHA, G. R. da. Análise agrometeorológica da safra de soja 2008/2009, em Passo Fundo, RS. In: COSTAMILAN, L. M.; BERTAGNOLLI, P. F. (Org.). Soja: resultados de pesquisa 2008/2009. Passo Fundo: Embrapa Trigo, 2009. p. 22-23. (Embrapa Trigo. Documentos, 93).| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Trigo. |
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| Registros recuperados : 295 | |
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