|
|
Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Gado de Corte. |
Data corrente: |
12/08/1997 |
Data da última atualização: |
15/01/2014 |
Autoria: |
SOUZA, O. C. |
Título: |
Sulfur oxidation influence on rock phosphate solubilization in soil. |
Ano de publicação: |
1985 |
Fonte/Imprenta: |
[S.l.]: Texas A&M University, 1985. |
Páginas: |
43p. |
Idioma: |
Inglês |
Notas: |
Tese Mestrado. |
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 |
Palavras-Chave: |
P; S. |
Thesagro: |
Enxofre; Fósforo; Oxidação; Solo; Solubilidade. |
Thesaurus Nal: |
oxidation; phosphorus; soil; solubility; sulfur. |
Categoria do assunto: |
-- |
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
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Gado de Corte (CNPGC) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registros recuperados : 119 | |
10. | | KOZLOWSKI, M.; MORETZSOHN, M. de C.; PADUA, J. G.; FAVERO, A. P.; GIMENES, M. A. Identificação de híbridos inter-específicos de Arachis por meio de marcadores microssatélites. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS; WORKSHOP EM BIOPROSPECÇÃO E CONSERVAÇÃO DE PLANTAS NATIVAS DO SEMI-ÁRIDO, 3.; WORKSHOP INTERNACIONAL SOBRE BIOENERGIA E MEIO AMBIENTE, 2010, Salvador. Bancos de germoplasma: descobrir a riqueza, garantir o futuro: anais. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2010. CD-ROMTipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
| |
14. | | MORETZSOHN, M. de C.; BERTIOLI, S. C. de M. L.; GUIMARAES, P. M.; GIMENES, M. A.; VARSHNEY, R.; BERTIOLI, D. Creating a unified genetic map resource for peanut (Arachis hypogaea L.). In: INTERNATIONAL PLANT & ANIMAL GENOMES CONFERENCE, 17., 2009, San Diego, CA. [Proceedings...]. [S. l.: s.n.], 2009. P358Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
| |
17. | | GARCÍA, A. V.; SILVESTRI, M. C.; VANDECAVEYE, M. A.; CUSTODIO, A. R.; MORETZSOHN, M. de C.; LAVIA, G. I. Genomic affinity in hybrids of B-genome Arachis species: new genetic resources toward peanut improvement. Crop Breeding and Applied Biotechnology, v. 21, n. 3, e38292139, 2021Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
| |
Registros recuperados : 119 | |
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|