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Registro Completo |
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Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
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Data corrente: |
04/08/2015 |
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Data da última atualização: |
13/10/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PAULA NETO, A.; FAVARIN, J. L.; REIS, A. R. dos; TEZOTTO, T.; ALMEIDA, R. E. M. de; LAVRES JUNIOR, J.; GALLO, L. A. |
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Afiliação: |
ANA PAULA NETO, ESALQ; JOSE LAERCIO FAVARIN, ESALQ; ANDRE RODRIGUES DOS REIS, UNESP; TIAGO TEZOTTO, ESALQ; RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; JOSE LAVRES JUNIOR, CENA; LUIZ ANTONIO GALLO, ESALQ. |
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Título: |
Nitrogen metabolism in coffee plants in response to nitrogen supply by fertigation. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Theoretical and Experimental Plant Physiology, v. 27, n. 1, p. 41-50, Mar. 2015. |
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DOI: |
10.1007/s40626-014-0030-2 |
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Idioma: |
Inglês |
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Conteúdo: |
Coffee plants require high application rates of nitrogen (N) to produce coffee beans. However, information regarding plant N uptake and assimilation under intensive high-technology cultivation systems is scarce, a situation which restrains the maximizing productivity with minimal N rates. The aim of this study was to evaluate N assimilation enzymes such as nitrate reductase (EC 1.6.6.1), glutamine synthetase (EC 6.3.1.2), urease (EC 3.5.1.5), and N compounds of coffee plants during a phenological cycle in response to N applied by fertigation. Our study was carried out with 7-year-old trees of Coffea arabica L., under a center pivot sprinkler irrigation and fertigation system, with five N rates (0, 200, 400, 600, and 800 kg ha−1) applied to the coffee field. The results of the present study suggest that both N metabolism enzymes, and the content of nitrate and ammonium in coffee were directly related to the phenological cycle. The N fertigation rates are correlated with the N and amino acid contente. Nitrate reductase and urease showed higher activities before anthesis and during grain filling. Glutamine synthetase showed highest activities during rapid grain expansion. The data also indicate that there is merit in gaining greater understanding of N metabolism in coffee plants grown under high-intensive systems. There is therefore merit in conducting further research on how monitoring the N assimilation enzymes might be used to improve fertilizer management of coffee in commercial orchards. MenosCoffee plants require high application rates of nitrogen (N) to produce coffee beans. However, information regarding plant N uptake and assimilation under intensive high-technology cultivation systems is scarce, a situation which restrains the maximizing productivity with minimal N rates. The aim of this study was to evaluate N assimilation enzymes such as nitrate reductase (EC 1.6.6.1), glutamine synthetase (EC 6.3.1.2), urease (EC 3.5.1.5), and N compounds of coffee plants during a phenological cycle in response to N applied by fertigation. Our study was carried out with 7-year-old trees of Coffea arabica L., under a center pivot sprinkler irrigation and fertigation system, with five N rates (0, 200, 400, 600, and 800 kg ha−1) applied to the coffee field. The results of the present study suggest that both N metabolism enzymes, and the content of nitrate and ammonium in coffee were directly related to the phenological cycle. The N fertigation rates are correlated with the N and amino acid contente. Nitrate reductase and urease showed higher activities before anthesis and during grain filling. Glutamine synthetase showed highest activities during rapid grain expansion. The data also indicate that there is merit in gaining greater understanding of N metabolism in coffee plants grown under high-intensive systems. There is therefore merit in conducting further research on how monitoring the N assimilation enzymes might be used to improve fertilizer management of coffee in... Mostrar Tudo |
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Thesagro: |
Café; Coffea Arábica; Nitrogênio; Uréia. |
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Thesaurus Nal: |
Fertigation; Glutamate-ammonia ligase. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/127447/1/CNPASA2015-1.pdf
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Marc: |
LEADER 02343naa a2200277 a 4500
001 2021311
005 2017-10-13
008 2015 bl uuuu u00u1 u #d
024 7 $a10.1007/s40626-014-0030-2$2DOI
100 1 $aPAULA NETO, A.
245 $aNitrogen metabolism in coffee plants in response to nitrogen supply by fertigation.$h[electronic resource]
260 $c2015
520 $aCoffee plants require high application rates of nitrogen (N) to produce coffee beans. However, information regarding plant N uptake and assimilation under intensive high-technology cultivation systems is scarce, a situation which restrains the maximizing productivity with minimal N rates. The aim of this study was to evaluate N assimilation enzymes such as nitrate reductase (EC 1.6.6.1), glutamine synthetase (EC 6.3.1.2), urease (EC 3.5.1.5), and N compounds of coffee plants during a phenological cycle in response to N applied by fertigation. Our study was carried out with 7-year-old trees of Coffea arabica L., under a center pivot sprinkler irrigation and fertigation system, with five N rates (0, 200, 400, 600, and 800 kg ha−1) applied to the coffee field. The results of the present study suggest that both N metabolism enzymes, and the content of nitrate and ammonium in coffee were directly related to the phenological cycle. The N fertigation rates are correlated with the N and amino acid contente. Nitrate reductase and urease showed higher activities before anthesis and during grain filling. Glutamine synthetase showed highest activities during rapid grain expansion. The data also indicate that there is merit in gaining greater understanding of N metabolism in coffee plants grown under high-intensive systems. There is therefore merit in conducting further research on how monitoring the N assimilation enzymes might be used to improve fertilizer management of coffee in commercial orchards.
650 $aFertigation
650 $aGlutamate-ammonia ligase
650 $aCafé
650 $aCoffea Arábica
650 $aNitrogênio
650 $aUréia
700 1 $aFAVARIN, J. L.
700 1 $aREIS, A. R. dos
700 1 $aTEZOTTO, T.
700 1 $aALMEIDA, R. E. M. de
700 1 $aLAVRES JUNIOR, J.
700 1 $aGALLO, L. A.
773 $tTheoretical and Experimental Plant Physiology$gv. 27, n. 1, p. 41-50, Mar. 2015.
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Registro original: |
Embrapa Pesca e Aquicultura (CNPASA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
23/12/2020 |
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Data da última atualização: |
11/01/2021 |
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Tipo da produção científica: |
Circular Técnica |
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Autoria: |
LEAO, P. C. de S.; CHAVES, A. R. de M. |
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Afiliação: |
PATRICIA COELHO DE SOUZA LEAO, CPATSA; AGNALDO RODRIGUES DE MELO CHAVES, CPATSA. |
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Título: |
Sistemas de condução e suas influências na produtividade e desempenho agronômico de videiras Syrah e Chenin Blanc no Vale do São Francisco. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Petrolina: Embrapa Semiárido, 2020. |
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Páginas: |
10 p. |
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Descrição Física: |
il |
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Série: |
(Embrapa Semiárido. Circular técnica, 126). |
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ISSN: |
1516-1617 |
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Idioma: |
Português |
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Conteúdo: |
São apresentadas informações associadas à influência dos sistemas de condução espaldeira e lira no desempenho agronômico das videiras destinadas a produção de vinhos Syrah e Chenin Blanc. São resultados de avaliações realizadas no período de 2013 a 2017, em condições climáticas e de solo característicos do Semiárido brasileiro, adotando- se espaçamento entre plantas de 1 m e entre filas de 3 m na espaldeira e de 4,2 m na lira, com sistema de irrigação localizado por gotejamento. |
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Palavras-Chave: |
Chenin Blanc; Espaldeira; Lira; Sistemas de condução; Syrah. |
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Thesagro: |
Competição de Variedade; Comportamento de Variedade; Uva; Vitis Vinifera. |
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Thesaurus NAL: |
Cultivar identification; Grapes; Vines; Wine cultivars. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/219633/1/Sistemas-de-conducao-e-suas-influencias-2020.pdf
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Marc: |
LEADER 01454nam a2200313 a 4500
001 2128670
005 2021-01-11
008 2020 bl uuuu u0uu1 u #d
022 $a1516-1617
100 1 $aLEAO, P. C. de S.
245 $aSistemas de condução e suas influências na produtividade e desempenho agronômico de videiras Syrah e Chenin Blanc no Vale do São Francisco.$h[electronic resource]
260 $aPetrolina: Embrapa Semiárido$c2020
300 $a10 p.$cil
490 $a(Embrapa Semiárido. Circular técnica, 126).
520 $aSão apresentadas informações associadas à influência dos sistemas de condução espaldeira e lira no desempenho agronômico das videiras destinadas a produção de vinhos Syrah e Chenin Blanc. São resultados de avaliações realizadas no período de 2013 a 2017, em condições climáticas e de solo característicos do Semiárido brasileiro, adotando- se espaçamento entre plantas de 1 m e entre filas de 3 m na espaldeira e de 4,2 m na lira, com sistema de irrigação localizado por gotejamento.
650 $aCultivar identification
650 $aGrapes
650 $aVines
650 $aWine cultivars
650 $aCompetição de Variedade
650 $aComportamento de Variedade
650 $aUva
650 $aVitis Vinifera
653 $aChenin Blanc
653 $aEspaldeira
653 $aLira
653 $aSistemas de condução
653 $aSyrah
700 1 $aCHAVES, A. R. de M.
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Embrapa Semiárido (CPATSA) |
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