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Registro Completo |
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Biblioteca(s): |
Embrapa Pesca e Aquicultura; Embrapa Solos / UEP-Recife; Embrapa Unidades Centrais. |
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Data corrente: |
14/11/2016 |
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Data da última atualização: |
17/11/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BORTOLON, L.; ERNANI, P. R.; BORTOLON, E. S. O.; GIANELO, C.; ALMEIDA, R. G. O. de; WELTER, S.; ROGERI, D. A. |
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Afiliação: |
LEANDRO BORTOLON, CNPASA; PAULO ROBERTO ERNANI, UESC; ELISANDRA SOLANGE OLIVEIRA BORTOLON, CNPASA; CLESIO GIANELLO, UFRGS; RODRIGO GABRIEL OLIVEIRA DE ALMEIDA, UFRGS; SAMUEL WELTER, UFRGS; DOUGLAS ANTONIO ROGERI, Faculdade de Itapiranga. |
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Título: |
Degree of phosphorus saturation threshold for minimizing P losses by runoff in cropland soil of Southern Brazil. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 51, n. 9, p. 1088-1098, set. 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to assess the risk of phosphorus losses by runoff through an index based on the degree of P saturation (DPS), in cropland soils of Southern Brazil. Sixty-five highly representative cropland soils from the region were evaluated. Three labile P forms were measured (Mehlich-1, Mehlich-3, and ammonium oxalate), and four P sorption indexes were tested (phosphorus single sorption point and Fe+Al determined with the three extractors). Water-extractable P (WEP) was used as an index of P susceptibility to losses by surface runoff. The DPS was determined from the ratio between labile P and each sorption index. DPS values obtained from the ratio between Mehlich-1 P and the single P sorption point ranged from 1 to 25%, whereas those from Mehlich-1 P and Fe+Al (ammonium oxalate) ranged from 1 to 55%. All DPS types were highly correlated with WEP. From a practical stand point, the DPS obtained with both P and Fe+Al extracted with Mehlich-1 can be used to estimate the risk of P losses by runoff in soils of Southern Brazil. |
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Palavras-Chave: |
Escorrimento superficial; P em único ponto; Qualidade de água; Single P sorption point. |
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Thesagro: |
Eutrofização. |
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Thesaurus Nal: |
Eutrophication; Runoff; Water quality. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/150006/1/Degree-of-phosphorus-saturation.pdf
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Marc: |
LEADER 01951naa a2200289 a 4500
001 2056553
005 2016-11-17
008 2016 bl uuuu u00u1 u #d
100 1 $aBORTOLON, L.
245 $aDegree of phosphorus saturation threshold for minimizing P losses by runoff in cropland soil of Southern Brazil.$h[electronic resource]
260 $c2016
520 $aThe objective of this work was to assess the risk of phosphorus losses by runoff through an index based on the degree of P saturation (DPS), in cropland soils of Southern Brazil. Sixty-five highly representative cropland soils from the region were evaluated. Three labile P forms were measured (Mehlich-1, Mehlich-3, and ammonium oxalate), and four P sorption indexes were tested (phosphorus single sorption point and Fe+Al determined with the three extractors). Water-extractable P (WEP) was used as an index of P susceptibility to losses by surface runoff. The DPS was determined from the ratio between labile P and each sorption index. DPS values obtained from the ratio between Mehlich-1 P and the single P sorption point ranged from 1 to 25%, whereas those from Mehlich-1 P and Fe+Al (ammonium oxalate) ranged from 1 to 55%. All DPS types were highly correlated with WEP. From a practical stand point, the DPS obtained with both P and Fe+Al extracted with Mehlich-1 can be used to estimate the risk of P losses by runoff in soils of Southern Brazil.
650 $aEutrophication
650 $aRunoff
650 $aWater quality
650 $aEutrofização
653 $aEscorrimento superficial
653 $aP em único ponto
653 $aQualidade de água
653 $aSingle P sorption point
700 1 $aERNANI, P. R.
700 1 $aBORTOLON, E. S. O.
700 1 $aGIANELO, C.
700 1 $aALMEIDA, R. G. O. de
700 1 $aWELTER, S.
700 1 $aROGERI, D. A.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 51, n. 9, p. 1088-1098, set. 2016.
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Registro original: |
Embrapa Pesca e Aquicultura (CNPASA) |
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| Registros recuperados : 4 | |
| 1. |  | ROGERI, D. A.; BORTOLON, L.; GIANELLO, C.; AMORIM, M. B. Remaining phosphorus content to determine phosphorus availability of the soils in Rio Grande do Sul. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 52, n. 12, p. 1203-1214, dez. 2017. Título em português: Fósforo remanescente para determinar a disponibilidade de fósforo em solos do Rio Grande do Sul.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Pesca e Aquicultura; Embrapa Unidades Centrais. |
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| 3. | | BORTOLON, L.; BORTOLON, E. S. O.; GIANELLO, C.; NICOLODI, M.; ROGERI, D. A. Possibilidades para aumentar a eficiência do uso do fósforo na agricultura e a proteção ambiental. Revista Plantio Direto, Passo Fundo, v. 27, n. 157, p. 33-40, maio/jun. 2017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 5 |
| Biblioteca(s): Embrapa Pesca e Aquicultura. |
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| 4. | | BORTOLON, L.; ERNANI, P. R.; BORTOLON, E. S. O.; GIANELO, C.; ALMEIDA, R. G. O. de; WELTER, S.; ROGERI, D. A. Degree of phosphorus saturation threshold for minimizing P losses by runoff in cropland soil of Southern Brazil. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 51, n. 9, p. 1088-1098, set. 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Pesca e Aquicultura; Embrapa Unidades Centrais. |
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| Registros recuperados : 4 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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