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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
30/12/2020 |
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Data da última atualização: |
07/05/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
NUNES, R. de S.; SOUSA, D. M. G. de; GOEDERT, J. W.; OLIVEIRA, L. E. Z.; PAVINATO, P. S.; PINHEIRO, T. D. |
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Afiliação: |
RAFAEL DE SOUZA NUNES, CPAC; DJALMA MARTINHAO GOMES DE SOUSA, CPAC. |
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Título: |
Distribution of Soil Phosphorus Fractions as a Function of Long-Term Soil Tillage and Phosphate Fertilization Management. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Frontiers in Earth Science, v. 8, 2020. |
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Idioma: |
Português |
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Conteúdo: |
The forms in which phosphorus (P) accumulates in soils are dependent on management practices, fertilizer sources, and methods of application, which may promote distinct P solubility and plant uptake. We aimed here to evaluate how soil tillage and phosphate fertilization strategies affected soil P fractions over 17 years and to identify best management practices for improving labile P fractions. The experiment was conducted in a very clayey Rhodic Ferralsol (Oxisol) with initially very low P availability, during 17 years under soybean and corn, fertilized with 35 kg P ha?1 year?1 . Treatments were two soil management systems (CT-conventional tillage and NT-no-till) and four phosphate fertilization strategies (TSP ? triple superphosphate or RRP ? reactive rock phosphate, applied to the crop furrow or broadcast). Soil samples were taken at five depth layers, and organic (Po), inorganic (Pi), and total P (Pt) were determined by Hedley?s sequential fractionation. CT resulted in a more homogeneous distribution of Pi fractions throughout the soil profile, while under NT there was a steep depth gradient characterized by Pi accumulation in the fertilizer application zone. NT resulted in accumulation of Pi in more labile fractions and higher accumulation of Po physically protected by aggregation, both compared to CT. Also, under NT with RRP, there was a great accumulation of Pi associated with calcium (HCl Pi) compared to TSP, especially when the fertilizer was broadcast applied. An accumulation of Po down to 20 cm (CT) and 10 cm (NT) was also detected, compared to Cerrado natural soil. NT and RRP positively affected legacy P fractions and can be recommended as strategies to improve P fertilizer use efficiency. Keywords: no-tillage, P fractionation, legacy P, P source, P distribution MenosThe forms in which phosphorus (P) accumulates in soils are dependent on management practices, fertilizer sources, and methods of application, which may promote distinct P solubility and plant uptake. We aimed here to evaluate how soil tillage and phosphate fertilization strategies affected soil P fractions over 17 years and to identify best management practices for improving labile P fractions. The experiment was conducted in a very clayey Rhodic Ferralsol (Oxisol) with initially very low P availability, during 17 years under soybean and corn, fertilized with 35 kg P ha?1 year?1 . Treatments were two soil management systems (CT-conventional tillage and NT-no-till) and four phosphate fertilization strategies (TSP ? triple superphosphate or RRP ? reactive rock phosphate, applied to the crop furrow or broadcast). Soil samples were taken at five depth layers, and organic (Po), inorganic (Pi), and total P (Pt) were determined by Hedley?s sequential fractionation. CT resulted in a more homogeneous distribution of Pi fractions throughout the soil profile, while under NT there was a steep depth gradient characterized by Pi accumulation in the fertilizer application zone. NT resulted in accumulation of Pi in more labile fractions and higher accumulation of Po physically protected by aggregation, both compared to CT. Also, under NT with RRP, there was a great accumulation of Pi associated with calcium (HCl Pi) compared to TSP, especially when the fertilizer was broadcast applied. An a... Mostrar Tudo |
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Thesagro: |
Fixação de Fósforo; Fósforo; Plantio Direto. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/219779/1/feart-08-00350.pdf
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Marc: |
LEADER 02472naa a2200217 a 4500
001 2128863
005 2021-05-07
008 2020 bl uuuu u00u1 u #d
100 1 $aNUNES, R. de S.
245 $aDistribution of Soil Phosphorus Fractions as a Function of Long-Term Soil Tillage and Phosphate Fertilization Management.$h[electronic resource]
260 $c2020
520 $aThe forms in which phosphorus (P) accumulates in soils are dependent on management practices, fertilizer sources, and methods of application, which may promote distinct P solubility and plant uptake. We aimed here to evaluate how soil tillage and phosphate fertilization strategies affected soil P fractions over 17 years and to identify best management practices for improving labile P fractions. The experiment was conducted in a very clayey Rhodic Ferralsol (Oxisol) with initially very low P availability, during 17 years under soybean and corn, fertilized with 35 kg P ha?1 year?1 . Treatments were two soil management systems (CT-conventional tillage and NT-no-till) and four phosphate fertilization strategies (TSP ? triple superphosphate or RRP ? reactive rock phosphate, applied to the crop furrow or broadcast). Soil samples were taken at five depth layers, and organic (Po), inorganic (Pi), and total P (Pt) were determined by Hedley?s sequential fractionation. CT resulted in a more homogeneous distribution of Pi fractions throughout the soil profile, while under NT there was a steep depth gradient characterized by Pi accumulation in the fertilizer application zone. NT resulted in accumulation of Pi in more labile fractions and higher accumulation of Po physically protected by aggregation, both compared to CT. Also, under NT with RRP, there was a great accumulation of Pi associated with calcium (HCl Pi) compared to TSP, especially when the fertilizer was broadcast applied. An accumulation of Po down to 20 cm (CT) and 10 cm (NT) was also detected, compared to Cerrado natural soil. NT and RRP positively affected legacy P fractions and can be recommended as strategies to improve P fertilizer use efficiency. Keywords: no-tillage, P fractionation, legacy P, P source, P distribution
650 $aFixação de Fósforo
650 $aFósforo
650 $aPlantio Direto
700 1 $aSOUSA, D. M. G. de
700 1 $aGOEDERT, J. W.
700 1 $aOLIVEIRA, L. E. Z.
700 1 $aPAVINATO, P. S.
700 1 $aPINHEIRO, T. D.
773 $tFrontiers in Earth Science$gv. 8, 2020.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Biblioteca(s): |
Embrapa Algodão. |
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Data corrente: |
16/03/2011 |
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Data da última atualização: |
17/03/2011 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
VEIGA, A. C. P.; OTUKA, A. K.; PEDROSO, E. do C.; MIRANDA, J. E. |
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Afiliação: |
ANA CAROLINA PIRES VEIGA; ALESSANDRA KARINA OTUKA; ELIZABETH DO CARMO PEDROSO; JOSE EDNILSON MIRANDA, CNPA. |
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Título: |
Viabilidade e duração ninfal de orius insidiosus (Hemiptera: anthocoridae) alimentado com aphis gossypii (hemiptera: aphididade), em algodão transgênico e não transgênico. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 23., 2010, Natal. Anais... Natal: Sociedade Brasileira de Entomologia, 2010. |
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Idioma: |
Português |
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Palavras-Chave: |
Algodão transgênico; Aphis; Percevejo predador. |
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Thesaurus NAL: |
Orius. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/29817/1/texto-1.pdf
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Marc: |
LEADER 00692nam a2200181 a 4500
001 1881135
005 2011-03-17
008 2010 bl uuuu u00u1 u #d
100 1 $aVEIGA, A. C. P.
245 $aViabilidade e duração ninfal de orius insidiosus (Hemiptera$banthocoridae) alimentado com aphis gossypii (hemiptera: aphididade), em algodão transgênico e não transgênico.
260 $aIn: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 23., 2010, Natal. Anais... Natal: Sociedade Brasileira de Entomologia$c2010
650 $aOrius
653 $aAlgodão transgênico
653 $aAphis
653 $aPercevejo predador
700 1 $aOTUKA, A. K.
700 1 $aPEDROSO, E. do C.
700 1 $aMIRANDA, J. E.
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Embrapa Algodão (CNPA) |
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