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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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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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| 6. | | MARTINS, J. M. C. de L.; ARASHIRO, E. K. N.; PUGLIESI, G.; SOUZA, G. N. de; BRANDÃO, F. Z. Gradual acclimation to repeated handling prior hormonal protocol as an alternative to reduce stress in beef cattle. Animal Reproduction, v. 21, n. 3, p. 42, 2024. Edição dos resumos da 37ª Annual Meeting of the Brazilian Embryo Technology Society, 2024, Atibaia, SP.| Tipo: Resumo em Anais de Congresso |
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| 8. | | BORGENS, A. M.; ALVES, B. R. C.; RUAS, J. R. M.; MENEZES, G. C. C.; CARVALHO, B. C.; AMARAL, T. F.; SILVA, S. G. B.; PUGLIESI, G. Early induction of ovulation in postpartum anestrous F1 Holstein x Zebu crossbred dairy cows. Reproduction in Domestic Animals, v. 43, n. s3, p. 33, 2008. Edição dos abstracts do 16º International Congress on Animal Reproduction, Budapest, 2008.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 9. | | SILVA, A. N. da; ALVES, L.; OSOWSKI, G. V.; SABEI, L.; FERRAZ, P. A.; PUGLIESI, G.; MARQUES, M. G.; ZANELLA, R.; ZANELLA, A. J. Housing Conditions and a Challenge with Lipopolysaccharide on the Day of Estrus Can Influence Gene Expression of the Corpus Luteum in Gilts. Genes, v. 13, n. 5, p. 1-13, 2022.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
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| 10. | | PUGLIESI, G.; SANTOS, F. B.; LOPES, E.; MADUREIRA, E. H.; NOGUEIRA, E.; MAIO, J. R. G.; SILVA, L. A.; BINELLI, M. Impacto da suplementação de progesterona de longa ação durante o diestro inicial em vacas nelore submetidas a IATF. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE TECNOLOGIA DE EMBRIÕES, 28., 2014, Natal. Anais... [S.l.]: SBTE, 2014. 1 p.| Tipo: Resumo em Anais de Congresso |
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| 11. | | DINIZ, J. H. W.; PERES, R. F. G.; TEIXEIRA, A. C. B.; RIVEROS, J. A. N.; NORONHA, I. M.; MARTINS, C. F. G.; OLIVEIRA, C. S.; POHLER, K. G.; PUGLIESI, G.; OLIVEIRA, L. Z. Administration of PGF2 alpha at the moment of timed-AI using sex-sorted or conventional semen in suckled nelore cows with different intensity of estrus behavior. Theriogenology, v. 74, 169e175, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
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| 12. | | CARRER, A. R.; ARRUDA, R. P.; PUGLIESI, G.; BALIEIRO, J. C. DE C.; GARCIA, A. R.; CELEGHINI, E. C. C.; SARAN NETTO, A.; RAMIREZ ZAMUDIO, G. D.; RAMOS, G. G.; MORELLI, K. G. A prole de machos da raça Nelore sofre influência da programação fetal sobre a funcionalidade de membrana plasmática, ao realizar desmame antecipado e convencional em fêmeas primíparas e multíparas? In: REUNIÃO ANUAL DA ASSOCIAÇÃO BRASILEIRA DE ANDROLOGIA ANIMAL (ABRAA), 8., 2024, Campo Grande, MS. Anais... Campo Grande, MS: Editora UFMS, 2024. Realização do evento 13 a 15 de junho de 2024.| Tipo: Resumo em Anais de Congresso |
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| 14. | | CARRER, A. R.; ARRUDA, R. P.; PUGLIESI, G.; BALIEIRO, J. C. DE C.; GARCIA, A. R.; CELEGHINI, E. C. C.; SARAN NETTO, A.; RAMIREZ ZAMUDIO, G. D.; RAMOS, G. G.; MORELLI, K. G. Existe efeito de programação fetal na prole subsequente de machos da raça Nelore sobre a funcionalidade de membrana mitocondrial, ao realizar desmame antecipado e convencional em fêmeas primíparas e multíparas? In: REUNIÃO ANUAL DA ASSOCIAÇÃO BRASILEIRA DE ANDROLOGIA ANIMAL (ABRAA), 8., 2024, Campo Grande, MS. Anais... Campo Grande, MS: Editora UFMS, 2024. p. 167.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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