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Registro Completo |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
10/10/2007 |
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Data da última atualização: |
28/07/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RIGHI, C. A.; BERNARDES, M. S.; LUNZ, A. M. P.; PEREIRA, C. R.; DOURADO NETO, D.; FAVARIN, J. L. |
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Afiliação: |
Ciro Abbud Righi, USP-CENA; Marcos Silveira Bernardes, USP-ESALQ; AURENY MARIA PEREIRA LUNZ, CPAF-AC; Carlos Rodrigues Pereira, UFRRJ; Durval Dourado Neto, USP-ESALQ; José Laercio Favarin, USP- ESALQ. |
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Título: |
Measurement and simulation of solar radiation availability in relation to the growth of coffe plants in an agroforestry system with rubber trees. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Revista Árvore, Viçosa, v. 31, n. 2, p. 195-207, 2007. |
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ISSN: |
0100-6762 (impresso) |
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DOI: |
10.1590/S0100-67622007000200002. |
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Idioma: |
Inglês |
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Conteúdo: |
Solar radiation is an important factor for plant growth, being its availability to understory crops strongly modified by trees in an Agroforestry System (AFS). Coffee trees (Coffea arabica cv. Obatã IAC 1669- 20) were planted at a 3.4 x 0.9 m spacing inside and aside rows of monocrops of 12 year-old rubber trees (Hevea spp.), in Piracicaba-SP, Brazil (22°42'30"S, 47°38'00"W - altitude: 546m). One-year-old coffee plants exposed to 25; 30; 35; 40; 45; 80; 90; 95 and 100% of the total solar radiation were evaluated according to its biophysical parameters of solar radiation interception and capture. The Goudriaan (1977) adapted by Bernardes et al. (1998) model for radiation attenuation fit well to the measured data. Coffee plants tolerate a decrease in solar radiation availability to 50% without undergoing a reduction on growth and LAI, which was approximately 2m2.m-2 under this condition. Further reductions on the availability of solar radiation caused a reduction in LAI (1.5m2.m-2), thus poor land cover and solar radiation interception, resulting in growth reduction. |
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Palavras-Chave: |
Agroforestería; Coffea arabica cv Obatã; Coffee; Cultivo mixto; Desempeño del crecimiento; Hevea spp; Piracicaba (SP); Radiación solar; Rubber tree; São Paulo; Sistema Agroflorestal (SAF). |
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Thesagro: |
Agrossilvicultura; Café; Caucho; Consorciação de cultura; Fator de crescimento; Radiação solar; Seringueira. |
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Thesaurus Nal: |
Agroforestry; Growth performance; Mixed cropping; Solar radiation. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://www.alice.cnptia.embrapa.br/alice/bitstream/doc/507215/1/16288.pdf
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Marc: |
null
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Registro original: |
Embrapa Acre (CPAF-AC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
16/03/2020 |
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Data da última atualização: |
29/09/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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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: |
Agronomic responses of grapevine Chenin Blanc as a function of training systems and rootstocks. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Scientia Agricola, v. 78, n.1, e20180413, 2021. |
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DOI: |
10.1590/1678-992X-2018-0413 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this research was to study the influence of training system and rootstock on the yield, vigor and physiology of the ?Chenin Blanc? grapevine at São Francisco Valley, northeastern Brazil. An experiment was carried out on eight harvests, from 2013 to 2017, in Petrolina, in the state of Pernambuco. Grapevines were grown under two training systems, lyre and espalier, and five rootstocks: ?IAC 572?, ?IAC 313?, ?IAC 766?, ?Paulsen 1103? and ?SO4?, using a split-plot randomized block design, with training systems assigned to the main plot and the rootstock assigned to the subplot. Lyre favored an increase in the number of bunches, branches and leaf mass in the harvest of the first semester of the year, while in the second semester there were increases of 40 % in the number of bunches and 10 % in leaf mass. Lyre promoted more balanced vines, showing a better ratio between production and pruning weight (Ravaz index). The rootstocks ?IAC 766?, ?IAC 313? and ?IAC 572? increased yield and bunch mass under both training systems, while ?SO4? reduced yield and vigor. The stomatal conductance and instantaneous efficiency of water use were not influenced by either the training system or the rootstock. Under tropical conditions in the São Francisco Valley, ?Chenin Blanc? grapevine may be grown under the lyre training system, preferably on the ?IAC 766? rootstock, to obtain high yields and balanced grapevines. |
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Palavras-Chave: |
Chenin Blanc; Viticultura tropical. |
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Thesagro: |
Fisiologia Vegetal; Porta Enxerto; Uva; Vitis Vinifera. |
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Thesaurus NAL: |
Grapes; Vitis. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://www.alice.cnptia.embrapa.br/alice/bitstream/doc/1121262/1/AgronomicresponsesofgrapevineCheninBlancasafunctionoftrainingsystems2020.pdf
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Marc: |
null
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Registro original: |
Embrapa Semiárido (CPATSA) |
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