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 | Acesso ao texto completo restrito à biblioteca da Embrapa Semiárido. Para informações adicionais entre em contato com cpatsa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
12/05/2011 |
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Data da última atualização: |
12/05/2011 |
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Autoria: |
SOUZA, O. M. F. de. |
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Afiliação: |
OSWALDO MARTINS FURTADO DE SOUZA, Academia Pernambucana de Ciência Agronômica, Recife. |
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Título: |
O que fui e o que sou. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Anais da Academia Pernambucana de Ciência Agronômica, Recife, v. 2, p. 63-64, 2005. |
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Idioma: |
Português |
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Palavras-Chave: |
Caesalpinea echinata; Pau-brasil. |
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Thesagro: |
Historia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00408naa a2200145 a 4500
001 1888343
005 2011-05-12
008 2005 bl uuuu u00u1 u #d
100 1 $aSOUZA, O. M. F. de
245 $aO que fui e o que sou.
260 $c2005
650 $aHistoria
653 $aCaesalpinea echinata
653 $aPau-brasil
773 $tAnais da Academia Pernambucana de Ciência Agronômica, Recife$gv. 2, p. 63-64, 2005.
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Embrapa Semiárido (CPATSA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
25/08/2005 |
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Data da última atualização: |
20/08/2018 |
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Autoria: |
GAVA, G. J. de C.; TRIVELIN, P. C. O.; VITTI, A. C.; OLIVEIRA, M. W. de. |
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Afiliação: |
Glauber José de Castro Gava, Agência Paulista de Tecnologia dos Agronegócios - Apta; Paulo Cesar Ocheuze Trivelin, Universidade de São Paulo - Usp/Centro de Energia Nuclear na Agricultura - Cena; André Cesar Vitti, Universidade de São Paulo - Usp/Centro de Energia Nuclear na Agricultura - Cena; Mauro Wagner de Oliveira, Universidade Federal de Alagoas - UFAL. |
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Título: |
Urea and sugarcane straw nitrogen balance in a soil-sugarcane crop system. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 40, n. 7, p. 689-695, jul. 2005 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Balanço do nitrogênio da uréia e da palha de cana no sistema solo-cana-de-açúcar. |
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Conteúdo: |
The objectives of this study were to evaluate nitrogen utilization by sugarcane ratoon from two sources, applied urea and sugarcane straw covering soil surface (trash blanket), besides the recovery of N from both sources in the soil-plant system. The following treatments were established in a randomized block design with four replicates: T1, vinasse-urea (100 kg ha-1 of urea-N) mixture applied on the total area of the soil covered with cane trash labeled with 15N; T2, vinasse-urea mixture (urea labeled with 15N; 100 kg ha-1 of urea-N) applied on the total area of the soil covered with non-labeled sugarcane trash; and T3, urea-15N (100 kg ha-1 of urea-N) applied in furrows at both sides of cane rows, with previous surface application of vinasse, onto soil without trash covering. The vinasse was applied at a rate of 100 m3 ha-1 in all treatments. The experiment was carried out on a Yellow Red Podzolic soil (Paleudalf), from October 1997 to August 1998, in Piracicaba, SP, Brazil. The nitrogen use efficiency of urea by the sugarcane ratoon was 21%, while that of the sugarcane straw was 9%. The main contributions of N from sugarcane trash, during one cycle, are the preservation and increase of the organic N in soil. The tendency for a lower accumulation of urea-N in the sugarcane plant, in the soil surface covered with sugarcane residue, was compensated by the assimilation of N from trash mineralization. Nitrogen derived from cane trash was more available to plants in the second half of the ratoon cycle. MenosThe objectives of this study were to evaluate nitrogen utilization by sugarcane ratoon from two sources, applied urea and sugarcane straw covering soil surface (trash blanket), besides the recovery of N from both sources in the soil-plant system. The following treatments were established in a randomized block design with four replicates: T1, vinasse-urea (100 kg ha-1 of urea-N) mixture applied on the total area of the soil covered with cane trash labeled with 15N; T2, vinasse-urea mixture (urea labeled with 15N; 100 kg ha-1 of urea-N) applied on the total area of the soil covered with non-labeled sugarcane trash; and T3, urea-15N (100 kg ha-1 of urea-N) applied in furrows at both sides of cane rows, with previous surface application of vinasse, onto soil without trash covering. The vinasse was applied at a rate of 100 m3 ha-1 in all treatments. The experiment was carried out on a Yellow Red Podzolic soil (Paleudalf), from October 1997 to August 1998, in Piracicaba, SP, Brazil. The nitrogen use efficiency of urea by the sugarcane ratoon was 21%, while that of the sugarcane straw was 9%. The main contributions of N from sugarcane trash, during one cycle, are the preservation and increase of the organic N in soil. The tendency for a lower accumulation of urea-N in the sugarcane plant, in the soil surface covered with sugarcane residue, was compensated by the assimilation of N from trash mineralization. Nitrogen derived from cane trash was more available to plants in the second ... Mostrar Tudo |
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Palavras-Chave: |
crop residue; eficiência de uso de nitrogênio; fertilizante-15N; fertilizer-15N; N recovery; nitrogen use efficiency; recuperação de N; resíduo de colheita. |
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Thesagro: |
Mineralização. |
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Thesaurus NAL: |
mineralization. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/107723/1/Urea.pdf
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Marc: |
LEADER 02480naa a2200289 a 4500
001 1115577
005 2018-08-20
008 2005 bl uuuu u00u1 u #d
100 1 $aGAVA, G. J. de C.
245 $aUrea and sugarcane straw nitrogen balance in a soil-sugarcane crop system.
260 $c2005
500 $aTítulo em português: Balanço do nitrogênio da uréia e da palha de cana no sistema solo-cana-de-açúcar.
520 $aThe objectives of this study were to evaluate nitrogen utilization by sugarcane ratoon from two sources, applied urea and sugarcane straw covering soil surface (trash blanket), besides the recovery of N from both sources in the soil-plant system. The following treatments were established in a randomized block design with four replicates: T1, vinasse-urea (100 kg ha-1 of urea-N) mixture applied on the total area of the soil covered with cane trash labeled with 15N; T2, vinasse-urea mixture (urea labeled with 15N; 100 kg ha-1 of urea-N) applied on the total area of the soil covered with non-labeled sugarcane trash; and T3, urea-15N (100 kg ha-1 of urea-N) applied in furrows at both sides of cane rows, with previous surface application of vinasse, onto soil without trash covering. The vinasse was applied at a rate of 100 m3 ha-1 in all treatments. The experiment was carried out on a Yellow Red Podzolic soil (Paleudalf), from October 1997 to August 1998, in Piracicaba, SP, Brazil. The nitrogen use efficiency of urea by the sugarcane ratoon was 21%, while that of the sugarcane straw was 9%. The main contributions of N from sugarcane trash, during one cycle, are the preservation and increase of the organic N in soil. The tendency for a lower accumulation of urea-N in the sugarcane plant, in the soil surface covered with sugarcane residue, was compensated by the assimilation of N from trash mineralization. Nitrogen derived from cane trash was more available to plants in the second half of the ratoon cycle.
650 $amineralization
650 $aMineralização
653 $acrop residue
653 $aeficiência de uso de nitrogênio
653 $afertilizante-15N
653 $afertilizer-15N
653 $aN recovery
653 $anitrogen use efficiency
653 $arecuperação de N
653 $aresíduo de colheita
700 1 $aTRIVELIN, P. C. O.
700 1 $aVITTI, A. C.
700 1 $aOLIVEIRA, M. W. de
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 40, n. 7, p. 689-695, jul. 2005
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