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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Gado de Corte. |
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Data corrente: |
12/08/1997 |
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Data da última atualização: |
15/01/2014 |
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Autoria: |
SOUZA, O. C. |
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Título: |
Sulfur oxidation influence on rock phosphate solubilization in soil. |
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Ano de publicação: |
1985 |
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Fonte/Imprenta: |
[S.l.]: Texas A&M University, 1985. |
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Páginas: |
43p. |
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Idioma: |
Inglês |
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Notas: |
Tese Mestrado. |
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Conteúdo: |
The low solubility of many rock phosphate (RP) around the world is the main cause of their ineffectiveness when applied to soil as a source of P for crops. The low solubility decreases their value as P fertilizers and prevents their widespread use, especially for high P demanding crops. One method proposed to enhance RP solubility is to add sulfur (S) as an amendment. The oxidation of S to H2SO4 in the soil results in dissolution of the applied RP. This study tested three Brazilian RP sources (Araxa, Catalao, and Patos de Minas) mixed with S at a ratio of 5:1 (RP:S). The application of the RP-S mixtures proved to be a promising alternative method for increasing RP solubility and thus their effectiveness as P sources. The soil pH decreased proportionally to increasing rates of RP-S application. The NaHCO3 extractable soil P increased as a consequence of increased soil acidefication. The ryegrass growth, P uptake, plant P concentration and P recovered from RP sources were enhanced only when S was mixed with the RPs. On the other hand, when RP sources were applied directly without S, the available soil P as measured by NaHCO3 extraction was depleted with time regardless of source or rate of RP. The inefficiency of the directly applied RP sources to supply adequate P was evidenced by less plant growth than applied with S. Also, in addition to this inadequate supply of for plant assimilation, the directly applied RP sources failed to develop a residual reserve of available P in the soil, even at very high application... MenosThe low solubility of many rock phosphate (RP) around the world is the main cause of their ineffectiveness when applied to soil as a source of P for crops. The low solubility decreases their value as P fertilizers and prevents their widespread use, especially for high P demanding crops. One method proposed to enhance RP solubility is to add sulfur (S) as an amendment. The oxidation of S to H2SO4 in the soil results in dissolution of the applied RP. This study tested three Brazilian RP sources (Araxa, Catalao, and Patos de Minas) mixed with S at a ratio of 5:1 (RP:S). The application of the RP-S mixtures proved to be a promising alternative method for increasing RP solubility and thus their effectiveness as P sources. The soil pH decreased proportionally to increasing rates of RP-S application. The NaHCO3 extractable soil P increased as a consequence of increased soil acidefication. The ryegrass growth, P uptake, plant P concentration and P recovered from RP sources were enhanced only when S was mixed with the RPs. On the other hand, when RP sources were applied directly without S, the available soil P as measured by NaHCO3 extraction was depleted with time regardless of source or rate of RP. The inefficiency of the directly applied RP sources to supply adequate P was evidenced by less plant growth than applied with S. Also, in addition to this inadequate supply of for plant assimilation, the directly applied RP sources failed to develop a residual reserve of available P in t... Mostrar Tudo |
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Palavras-Chave: |
P; S. |
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Thesagro: |
Enxofre; Fósforo; Oxidação; Solo; Solubilidade. |
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Thesaurus Nal: |
oxidation; phosphorus; soil; solubility; sulfur. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02182nam a2200277 a 4500
001 1323242
005 2014-01-15
008 1985 bl uuuu m 00u1 u #d
100 1 $aSOUZA, O. C.
245 $aSulfur oxidation influence on rock phosphate solubilization in soil.
260 $a[S.l.]: Texas A&M University$c1985
300 $a43p.
500 $aTese Mestrado.
520 $aThe low solubility of many rock phosphate (RP) around the world is the main cause of their ineffectiveness when applied to soil as a source of P for crops. The low solubility decreases their value as P fertilizers and prevents their widespread use, especially for high P demanding crops. One method proposed to enhance RP solubility is to add sulfur (S) as an amendment. The oxidation of S to H2SO4 in the soil results in dissolution of the applied RP. This study tested three Brazilian RP sources (Araxa, Catalao, and Patos de Minas) mixed with S at a ratio of 5:1 (RP:S). The application of the RP-S mixtures proved to be a promising alternative method for increasing RP solubility and thus their effectiveness as P sources. The soil pH decreased proportionally to increasing rates of RP-S application. The NaHCO3 extractable soil P increased as a consequence of increased soil acidefication. The ryegrass growth, P uptake, plant P concentration and P recovered from RP sources were enhanced only when S was mixed with the RPs. On the other hand, when RP sources were applied directly without S, the available soil P as measured by NaHCO3 extraction was depleted with time regardless of source or rate of RP. The inefficiency of the directly applied RP sources to supply adequate P was evidenced by less plant growth than applied with S. Also, in addition to this inadequate supply of for plant assimilation, the directly applied RP sources failed to develop a residual reserve of available P in the soil, even at very high application...
650 $aoxidation
650 $aphosphorus
650 $asoil
650 $asolubility
650 $asulfur
650 $aEnxofre
650 $aFósforo
650 $aOxidação
650 $aSolo
650 $aSolubilidade
653 $aP
653 $aS
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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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Origem |
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Classificação |
Cutter |
Registro |
Volume |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
09/12/2014 |
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Data da última atualização: |
09/12/2014 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SANTOS, E. dos; BROWN, G. G.; CARDOSO, G. B. X.; NADOLNY, H.; PAES, L. S. de O. P.; ASSIS, O. de; FERREIRA, S. de A.; DEMETRIO, W. C. |
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Afiliação: |
Everaldo dos Santos; GEORGE GARDNER BROWN, CNPF; Guilherme Borges Xarão Cardoso, UFPR; Herlon Nadolny, Doutorando da Embrapa Florestas; Leocimara Sutil de Oliveira Pessoa Paes; Orlando de Assis; Stephanie de Almeida Ferreira; Wilian Carlo Demetrio. |
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Título: |
Invertebrados edáficos em diferentes sistemas de uso do solo no Município de Quitandinha, PR. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 31.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 15.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 13.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 10., 2014, Araxá. Fertilidade e biologia do solo: integração e tecnologias para todos: anais. Araxá: Núcleo Regional Leste da Sociedade Brasileira de Ciência do Solo, 2014. |
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Idioma: |
Português |
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Notas: |
Resumo. FERTBIO 2014. |
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Palavras-Chave: |
Macrofauna; Mesofauna; Paraná; Sistemas de uso. |
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Thesagro: |
Biologia do Solo. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/113299/1/2014-GeorgeB-FERTBIO-Invertebrados.pdf
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Marc: |
LEADER 01099nam a2200253 a 4500
001 2001933
005 2014-12-09
008 2014 bl uuuu u00u1 u #d
100 1 $aSANTOS, E. dos
245 $aInvertebrados edáficos em diferentes sistemas de uso do solo no Município de Quitandinha, PR.$h[electronic resource]
260 $aIn: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 31.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 15.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 13.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 10., 2014, Araxá. Fertilidade e biologia do solo: integração e tecnologias para todos: anais. Araxá: Núcleo Regional Leste da Sociedade Brasileira de Ciência do Solo$c2014
500 $aResumo. FERTBIO 2014.
650 $aBiologia do Solo
653 $aMacrofauna
653 $aMesofauna
653 $aParaná
653 $aSistemas de uso
700 1 $aBROWN, G. G.
700 1 $aCARDOSO, G. B. X.
700 1 $aNADOLNY, H.
700 1 $aPAES, L. S. de O. P.
700 1 $aASSIS, O. de
700 1 $aFERREIRA, S. de A.
700 1 $aDEMETRIO, W. C.
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Registro original: |
Embrapa Florestas (CNPF) |
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