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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
12/01/1997 |
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Data da última atualização: |
28/08/2019 |
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Autoria: |
LUPATINI, G. C.; MOOJEN, E. L.; RESTLE, J.; SILVA, J. H. S. da. |
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Afiliação: |
Gelci Carlos Lupatini, Universidade Federal de Santa Maria - UFSM/Departamento de Zootecnia; Eduardo Londero Moojen, Universidade Federal de Santa Maria - UFSM/Departamento de Zootecnia; João Restle, Universidade Federal de Santa Maria - UFSM/Departamento de Zootecnia; José Henrique Souza da Silva, Universidade Federal de Santa Maria - UFSM/Departamento de Zootecnia. |
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Título: |
Resposta do milheto (Pennisetum americanum(L.) Leeke) sob pastejo a adubação nitrogenada. |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 31, n. 10, p. 715-720, out. 1996. |
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Idioma: |
Português |
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Notas: |
Título em inglês: Evaluation of pearl millet (Pennisetum americanum(L.) Leeke) under grazing with nitrogen levels. |
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Conteúdo: |
O experimento foi conduzido em area da Universidade Federal de Santa Maria, RS, em pastagem de milheto cv. Comum (Pennisetum americanum (L.) Leeke), submetida a niveis de adubacao nitrogenada (0,150 e 300 kg/ha de nirogenio), num delineamento em blocos completos casualizados, com tres repeticoes, no periodo de 7.12.91 a 8.01.92 (estabelecimento), e dai ate 3.04.92 (pastejo), com novilhos de corte. O objetivo do trabalho foi avaliar a resposta do milheto a niveis de N, em producao e qualidade da pastagem. O sistema de pastejo foi o continuo, com ajustes ade carga para manter um nivel de oferta de forragem de 10 kg de materia seca (MS) por 100 kg de peso vivo (PV)/dia, correspondendo a uma pressao de pastejo (PP) de 10%, que caracterizou um residuo medio de 3.168 kg MS/ha. As producoes observadas foram 6.272, 12.175 e 15.578 kg MS/ha, e os teores de proteina bruta (PB): 6,9, 12,2 e 14,3% nos tratamentos 0, 150 e 300 kg N/ha, respectivamente. As variaveis taxa de acumulacao, producao de MS e teor de B mostraram uma relacao linear positiva com os niveis de adubacao nirogenada, denotando o alto potencial do milheto. |
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Palavras-Chave: |
Accumulation rate; Nitrogen fertilization; Pasture quality; Producao de forragem; Qualidade da pastagem; Taxa de acumulacao. |
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Thesagro: |
Composição Botânica; Uréia. |
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Thesaurus Nal: |
botanical composition; forage production; urea. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/19339/1/pab96_06_out.pdf
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Marc: |
LEADER 02126naa a2200301 a 4500
001 1104138
005 2019-08-28
008 1996 bl uuuu u00u1 u #d
100 1 $aLUPATINI, G. C.
245 $aResposta do milheto (Pennisetum americanum(L.) Leeke) sob pastejo a adubação nitrogenada.
260 $c1996
500 $aTítulo em inglês: Evaluation of pearl millet (Pennisetum americanum(L.) Leeke) under grazing with nitrogen levels.
520 $aO experimento foi conduzido em area da Universidade Federal de Santa Maria, RS, em pastagem de milheto cv. Comum (Pennisetum americanum (L.) Leeke), submetida a niveis de adubacao nitrogenada (0,150 e 300 kg/ha de nirogenio), num delineamento em blocos completos casualizados, com tres repeticoes, no periodo de 7.12.91 a 8.01.92 (estabelecimento), e dai ate 3.04.92 (pastejo), com novilhos de corte. O objetivo do trabalho foi avaliar a resposta do milheto a niveis de N, em producao e qualidade da pastagem. O sistema de pastejo foi o continuo, com ajustes ade carga para manter um nivel de oferta de forragem de 10 kg de materia seca (MS) por 100 kg de peso vivo (PV)/dia, correspondendo a uma pressao de pastejo (PP) de 10%, que caracterizou um residuo medio de 3.168 kg MS/ha. As producoes observadas foram 6.272, 12.175 e 15.578 kg MS/ha, e os teores de proteina bruta (PB): 6,9, 12,2 e 14,3% nos tratamentos 0, 150 e 300 kg N/ha, respectivamente. As variaveis taxa de acumulacao, producao de MS e teor de B mostraram uma relacao linear positiva com os niveis de adubacao nirogenada, denotando o alto potencial do milheto.
650 $abotanical composition
650 $aforage production
650 $aurea
650 $aComposição Botânica
650 $aUréia
653 $aAccumulation rate
653 $aNitrogen fertilization
653 $aPasture quality
653 $aProducao de forragem
653 $aQualidade da pastagem
653 $aTaxa de acumulacao
700 1 $aMOOJEN, E. L.
700 1 $aRESTLE, J.
700 1 $aSILVA, J. H. S. da
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 31, n. 10, p. 715-720, out. 1996.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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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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