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| 8. |  | NASCIMENTO, P. S.; SILVA, J. A.; COSTA, B. R. S.; BASSOI, L. H. Aplicação dos conceitos geoestatísticos para o manejo da irrigação em videira no Vale do Submédio São Francisco. In: BERNARDI, A. C. de C.; NAIME, J. de M.; RESENDE, A. V. de; BASSOI, L. H.; INAMASU, R. Y. (Ed.). Agricultura de precisão: resultados de um novo olhar. Brasília, DF: Embrapa, 2014. p. 407-412.| Biblioteca(s): Embrapa Semiárido. |
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| 16. | | COSTA, B. R. S.; OLDONI, H.; SILVA, T. M. M.; BASSOI, L. H. Desempenho de métodos para estimativa do índice de vegetação por diferença normalizada em videiras mediantes sensoriamento proximal. In: SIMPÓSIO NACIONAL DE INSTRUMENTAÇÃO AGROPECUÁRIA, 4., 2019, São Carlos, SP. Ciência, inovação e mercado: anais. São Carlos, SP: Embrapa Instrumentação, 2019. Editores: Paulino Ribeiro Villas-Boas, Maria Alice Martins, Débora Marcondes Bastos Pereira Milori, Ladislau Martin Neto. SIAGRO 2019. 58-62| Biblioteca(s): Embrapa Instrumentação. |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
09/01/2017 |
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Data da última atualização: |
16/02/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 2 |
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Autoria: |
CHAVES, A. R. de M.; SILVA, D. J.; AIDAR, S. de T.; SANTOS, L. M.; PRADO, K. A. C. de; COSTA, B. R. S. |
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Afiliação: |
AGNALDO RODRIGUES DE MELO CHAVES, CPATSA; DAVI JOSE SILVA, CPATSA; SAULO DE TARSO AIDAR, CPATSA; LUCIANA MARTINS SANTOS, UPE; KARINNE ALBUQUERQUE CAMPOS DE PRADO, UPE; BRUNO RICARDO SILVA COSTA. |
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Título: |
Potassium doses on the ecophysiological characteristics of Syrah grapevine grown at São Francisco River Valley, Brazil. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Comunicata Scientiae, v. 7, n. 3, p. 362-371, 2016. |
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DOI: |
10.14295/CS.v7i3.1764 |
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Idioma: |
Inglês |
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Conteúdo: |
The nutrients availability can lead to changes on grapevines physiological behavior, which results in a great importance of studies regarding the application of potassium doses. The aim of this research was to evaluate the ecophysiological behavior of grapevine cultivar ?Syrah? growing under different potassium doses by fertigation, according to the determination of gas exchange, chlorophyll a, fluorescence and pigments index. Five years old plants, grafted on ?Paulsen 1103? rootstock, in a trellis system and planted at the Bebedouro Experimental Field, located in Petrolina, PE, Brazil, were evaluated. The experiment was composed by five potassium doses (0, 20, 40, 80 and 160 kg ha-1), applied by fertigation. The potassium sources were potassium sulfate, potassium nitrate and potassium chloride. The evaluations of the ecophysiologyical parameters were performed at four different times (07am, 10am, 1pm and 3pm) throughout the day on the flowering stage and the first and second fruit growth stages, determining gas exchange and chlorophyll a fluorescence and the pigments index was evaluated at the same grapevines leaves one time. Considering each evaluation period, it was observed that, according to the magnitude of the results for gas exchange, chlorophyll a fluorescence and pigments index, is not possible to indicate the best potassium dose. The climatic conditions during each period of evaluation influenced most the eco-physiological variables than the applied potassium doses, while the changes on pigments index were due to leaves development during the plant cycle. MenosThe nutrients availability can lead to changes on grapevines physiological behavior, which results in a great importance of studies regarding the application of potassium doses. The aim of this research was to evaluate the ecophysiological behavior of grapevine cultivar ?Syrah? growing under different potassium doses by fertigation, according to the determination of gas exchange, chlorophyll a, fluorescence and pigments index. Five years old plants, grafted on ?Paulsen 1103? rootstock, in a trellis system and planted at the Bebedouro Experimental Field, located in Petrolina, PE, Brazil, were evaluated. The experiment was composed by five potassium doses (0, 20, 40, 80 and 160 kg ha-1), applied by fertigation. The potassium sources were potassium sulfate, potassium nitrate and potassium chloride. The evaluations of the ecophysiologyical parameters were performed at four different times (07am, 10am, 1pm and 3pm) throughout the day on the flowering stage and the first and second fruit growth stages, determining gas exchange and chlorophyll a fluorescence and the pigments index was evaluated at the same grapevines leaves one time. Considering each evaluation period, it was observed that, according to the magnitude of the results for gas exchange, chlorophyll a fluorescence and pigments index, is not possible to indicate the best potassium dose. The climatic conditions during each period of evaluation influenced most the eco-physiological variables than the applied potassium dose... Mostrar Tudo |
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Palavras-Chave: |
Chlorophyll a fluorescence; Ecofisiológia; Fluorescência da clorofila; Vale do São Francisco. |
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Thesagro: |
Fisiologia vegetal; Fotossíntese; Potássio; Uva; Vitis Vinifera. |
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Thesaurus NAL: |
Photosynthesis. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/155903/1/Agnaldo-2016.pdf
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Marc: |
LEADER 02547naa a2200313 a 4500
001 2060196
005 2017-02-16
008 2016 bl uuuu u00u1 u #d
024 7 $a10.14295/CS.v7i3.1764$2DOI
100 1 $aCHAVES, A. R. de M.
245 $aPotassium doses on the ecophysiological characteristics of Syrah grapevine grown at São Francisco River Valley, Brazil.$h[electronic resource]
260 $c2016
520 $aThe nutrients availability can lead to changes on grapevines physiological behavior, which results in a great importance of studies regarding the application of potassium doses. The aim of this research was to evaluate the ecophysiological behavior of grapevine cultivar ?Syrah? growing under different potassium doses by fertigation, according to the determination of gas exchange, chlorophyll a, fluorescence and pigments index. Five years old plants, grafted on ?Paulsen 1103? rootstock, in a trellis system and planted at the Bebedouro Experimental Field, located in Petrolina, PE, Brazil, were evaluated. The experiment was composed by five potassium doses (0, 20, 40, 80 and 160 kg ha-1), applied by fertigation. The potassium sources were potassium sulfate, potassium nitrate and potassium chloride. The evaluations of the ecophysiologyical parameters were performed at four different times (07am, 10am, 1pm and 3pm) throughout the day on the flowering stage and the first and second fruit growth stages, determining gas exchange and chlorophyll a fluorescence and the pigments index was evaluated at the same grapevines leaves one time. Considering each evaluation period, it was observed that, according to the magnitude of the results for gas exchange, chlorophyll a fluorescence and pigments index, is not possible to indicate the best potassium dose. The climatic conditions during each period of evaluation influenced most the eco-physiological variables than the applied potassium doses, while the changes on pigments index were due to leaves development during the plant cycle.
650 $aPhotosynthesis
650 $aFisiologia vegetal
650 $aFotossíntese
650 $aPotássio
650 $aUva
650 $aVitis Vinifera
653 $aChlorophyll a fluorescence
653 $aEcofisiológia
653 $aFluorescência da clorofila
653 $aVale do São Francisco
700 1 $aSILVA, D. J.
700 1 $aAIDAR, S. de T.
700 1 $aSANTOS, L. M.
700 1 $aPRADO, K. A. C. de
700 1 $aCOSTA, B. R. S.
773 $tComunicata Scientiae$gv. 7, n. 3, p. 362-371, 2016.
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