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| Registros recuperados : 12 | |
| 4. |  | PALMIERI, D. P.; BECHARA, M. D.; CURI, R. A.; MONTEIRO. J. P.; VALENTE, S. E. S.; GIMENES, M. A.; LOPES, C. R. Genetic diversity analysis in the section Caulorrhizae (genus Arachis) using microsatellite markers. Genetics and Molecular Biology, v.33, n.1, p. 109-118, 2010.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 5. | | SÁ, G. H.; LIMA, F. C. D.; VIANA, J. P. G.; LOPES, A. C. A.; CARVALHO, L. C. B.; VALENTE, S. E. S.; LIMA, P. S. da C. Genetic diversity and structure of an active germplasm collection of Annona squamosa L. Ecological Genetics and Genomics, v. 25, e100143, Sep. 2022.| Biblioteca(s): Embrapa Meio-Norte. |
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| 6. | | SANTOS, S. E. M.; GIMENES, M. A.; OLIVEIRA JUNIOR, J. O. L. de; COSTA, M. F.; GOMES, M. F. C.; VALENTE, S. E. S. Consequences of accelerated aging for DNA integrity and seed germination of cowpea. Genetics and Molecular Research, v. 18, n. 3, article gmr18304, 2019.| Biblioteca(s): Embrapa Meio-Norte; Embrapa Recursos Genéticos e Biotecnologia. |
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| 7. | | SOUSA, C. C.; GOMES, S. O.; LOPES, A. C. A.; GOMES, R. L. F.; BRITTO, F. B.; LIMA, P. S. C.; VALENTE, S. E. S. Comparison of methods to isolate DNA from Caesalpinia ferrea. Genetics and Molecular Research, v. 13, n. 2, p. 4486-4493, 2014.| Biblioteca(s): Embrapa Meio-Norte. |
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| 8. | | VIANA, J. P. G.; BORGES, A. N. C.; LOPES, A. C. A.; GOMES, R. L. F.; LIMA, P. S. da C.; VALENTE, S. E. S. Comparison of eight methods of genomic DNA extraction from babassu. Genetics and Molecular Research, v. 14, n. 4, p. 18003-18008, 2015.| Biblioteca(s): Embrapa Meio-Norte. |
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| 9. | | ALMEIDA, V. M.; LUZ, G. A.; MARTINS, P. P.; GOMES, M. F. C.; COSTA, M. F.; LIMA, P. S. da C.; VALENTE, S. E. S. Comparison of eight methods to isolate genomic DNA from Hancornia speciosa. Genetics and Molecular Research, Ribeirão Preto, v.16, n. 3: gmr16039724, 2017. 7 p.| Biblioteca(s): Embrapa Meio-Norte. |
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| 10. | | SANTOS, J. A.; LUZ, G. A.; OLIVEIRA, K. P.; OLIVEIRA, L. F.; ANDRADE JUNIOR, A. S. de; VALENTE, S. E. S.; LIMA, P. S. da C. DNase concentration assay to obtain DNA-free RNA from sugarcane leaves. Genetics and Molecular Research, v. 15, n. 4, p. 1-12, 2016.| Biblioteca(s): Embrapa Meio-Norte. |
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| 11. | | SOUZA, I. G. B.; VALENTE, S. E. S.; BRITTO, F. B.; SOUZA, V. A. B. de; LIMA, P. S. da C. RAPD analysis of the genetic diversity of mango (Mangifera indica) germplasm in Brazil. Genetics and Molecular Research, Ribeirão Preto, v. 10, n. 4, p. 3080-3089, 2011.| Biblioteca(s): Embrapa Meio-Norte. |
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| 12. | | SILVA, G. R.; SOUZA, B. de A.; PEREIRA, F. de M.; LOPES, M. T. do R.; VALENTE, S. E. S.; DINIZ, F. M. New molecular evidence for fragmentation between two distant populations of the threatened stingless bee Melipona subnitida Ducke (Hymenoptera, Apidae, Meliponini). Journal of Hymenoptera Research, Bulgaria, v. 38, p. 1?9, June 2014.| Biblioteca(s): Embrapa Meio-Norte. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
08/01/2013 |
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Data da última atualização: |
11/01/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
MARCHI, G.; SILVA, V. A.; GUILHERME, L. R. G.; LIMA, J. M.; NOGUEIRA, F. D.; GUIMARÃES, P. T. G. |
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Afiliação: |
GIULIANO MARCHI, CPAC; VLADIMIR ANTÔNIO SILVA, UFLA; LUIZ ROBERTO GUIMARÃES GUILHERME, UFLA; JOSÉ MARIA LIMA, UFLA; FRANCISCO DIAS NOGUEIRA, EPAMIG; PAULO TÁCITO GONTIJO GUIMARÃES, EPAMIG. |
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Título: |
Potassium extractability from soils of brazilian coffee regions. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Bioscience Journal, Uberlândia, MG, v. 28, n. 6, p. 913-919, nov./dez. 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
Coffee, which is an important commodity for Brazil, is a highly K-demanding crop. Methods for recommending K fertilization to coffee crops in Brazil are based on the amount of exchangeable K. Mineralogical studies estimating K supply capacity from different soil fractions, from medium to long term, were performed in Brazilian soils, but very few studies have been carried out focusing on the use of successive chemical extractions. This study evaluated K release from whole soil, as well as clay, silt, and sand fractions of B-horizon samples of a basalt-derived Oxisol and a sienite-derived Ultisol, both representative soils from coffee regions of Minas Gerais State. Successive extractions (0 to 665 h) of K were performed with 10-3 mol L-1 of either citrate or oxalate at 1:10 solid:solution ratio. The cumulative results were compared with forms of K (exchangeable, non-exchangeable, and total) as measured by different extraction procedures. The results showed that exchangeable K was higher, and non-exchangeable as well as total K were lower in the whole soil fraction of the Oxisol, than the K forms extracted from the Ultisol. The clay fraction was the main source of K in the Oxisol whereas the silt fraction contributed most for K supply in the Ultisol. Citrate and oxalate extracted similar amounts of K from the Oxisol, which is probably related to the fact that most of its K supply came from the exchangeable form. Citrate caused a greater release of K (part of which being from the non-exchangeable form) from the Ultisol than did oxalate. This work showed that soil texture alone is not a good indicator of K supply capacity, since for the same particle size, the studied soils revealed different K extractability. MenosCoffee, which is an important commodity for Brazil, is a highly K-demanding crop. Methods for recommending K fertilization to coffee crops in Brazil are based on the amount of exchangeable K. Mineralogical studies estimating K supply capacity from different soil fractions, from medium to long term, were performed in Brazilian soils, but very few studies have been carried out focusing on the use of successive chemical extractions. This study evaluated K release from whole soil, as well as clay, silt, and sand fractions of B-horizon samples of a basalt-derived Oxisol and a sienite-derived Ultisol, both representative soils from coffee regions of Minas Gerais State. Successive extractions (0 to 665 h) of K were performed with 10-3 mol L-1 of either citrate or oxalate at 1:10 solid:solution ratio. The cumulative results were compared with forms of K (exchangeable, non-exchangeable, and total) as measured by different extraction procedures. The results showed that exchangeable K was higher, and non-exchangeable as well as total K were lower in the whole soil fraction of the Oxisol, than the K forms extracted from the Ultisol. The clay fraction was the main source of K in the Oxisol whereas the silt fraction contributed most for K supply in the Ultisol. Citrate and oxalate extracted similar amounts of K from the Oxisol, which is probably related to the fact that most of its K supply came from the exchangeable form. Citrate caused a greater release of K (part of which being from th... Mostrar Tudo |
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Thesagro: |
Café; Solo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02301naa a2200205 a 4500
001 1944331
005 2013-01-11
008 2012 bl uuuu u00u1 u #d
100 1 $aMARCHI, G.
245 $aPotassium extractability from soils of brazilian coffee regions.
260 $c2012
520 $aCoffee, which is an important commodity for Brazil, is a highly K-demanding crop. Methods for recommending K fertilization to coffee crops in Brazil are based on the amount of exchangeable K. Mineralogical studies estimating K supply capacity from different soil fractions, from medium to long term, were performed in Brazilian soils, but very few studies have been carried out focusing on the use of successive chemical extractions. This study evaluated K release from whole soil, as well as clay, silt, and sand fractions of B-horizon samples of a basalt-derived Oxisol and a sienite-derived Ultisol, both representative soils from coffee regions of Minas Gerais State. Successive extractions (0 to 665 h) of K were performed with 10-3 mol L-1 of either citrate or oxalate at 1:10 solid:solution ratio. The cumulative results were compared with forms of K (exchangeable, non-exchangeable, and total) as measured by different extraction procedures. The results showed that exchangeable K was higher, and non-exchangeable as well as total K were lower in the whole soil fraction of the Oxisol, than the K forms extracted from the Ultisol. The clay fraction was the main source of K in the Oxisol whereas the silt fraction contributed most for K supply in the Ultisol. Citrate and oxalate extracted similar amounts of K from the Oxisol, which is probably related to the fact that most of its K supply came from the exchangeable form. Citrate caused a greater release of K (part of which being from the non-exchangeable form) from the Ultisol than did oxalate. This work showed that soil texture alone is not a good indicator of K supply capacity, since for the same particle size, the studied soils revealed different K extractability.
650 $aCafé
650 $aSolo
700 1 $aSILVA, V. A.
700 1 $aGUILHERME, L. R. G.
700 1 $aLIMA, J. M.
700 1 $aNOGUEIRA, F. D.
700 1 $aGUIMARÃES, P. T. G.
773 $tBioscience Journal, Uberlândia, MG$gv. 28, n. 6, p. 913-919, nov./dez. 2012.
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