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| Melo,Jorbas Sampaio de; Ribeiro,Valtemir Gonçalves. |
| O objetivo deste trabalho foi verificar o efeito de diferentes tensões de água no solo e diferentes concentrações de boro, na fertilidade de gemas de videira cv. Itália, manejada sob o sistema de poda mista. O experimento foi conduzido em pomar comercial, no município de Petrolina-PE. O delineamento experimental utilizado foi o de blocos ao acaso, em esquema fatorial 3x3: três tensões indicativas para a recarga hídrica por irrigação (-30 kPa, -50 kPa e -70 kPa) e três concentrações de boro (3%, 6% e 9%), com três repetições e duas plantas por parcela. A testemunha não recebeu aplicações com boro e o solo foi mantido com umidade na capacidade de campo (-10 kPa). As variáveis analisadas foram fertilidade de gemas, índice relativo de clorofila (IRC) e área... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera (L.); Sistemas de produção; Otencial mátrico. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000200019 |
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| MARTINEZ,EMANUEL ALMEIDA; RIBEIRO,VALTEMIR GONÇALVES; VILAR,PATRÍCIA FERNANDA INÁCIO; HAUSEN,LEANDRO JOSÉ DE OLIVEIRA VON; BEZERRA,ERIANE DANTAS. |
| ABSTRACT Methods of nitrogen analysis were adopted in leaf tissues in the laboratory, nitrate content in the sap of petioles and chlorophyll relative index (CRI, in SPAD unit), as well as the evaluation of the buds fertility rates, production and qualitative aspects of cluster and berries of ‘Thompson Seedless’ vine, grafted on rootstocks ‘Harmony’, ‘Jales’ ‘Paulsen 1103’ and ‘SO4’. The applied dose of N was 80 kg ha-1, and the experiment was installed in the Submédio do Vale do São Francisco, Brazil. The experiment was performed in a randomized blocks design, with four treatments and five replicates, with the experimental plot represented by five plants. In addition to the analysis of N, cluster length and width (cm) and fresh mass (g), berries length,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera (L.); Plant nutrition; Buds fertility; Viticultura tropical irrigada. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000500705 |
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| Ferlito,Filippo; Allegra,Maria; Torrisi,Biagio; Pappalardo,Helena; Gentile,Alessandra; Malfa,Stefano La; Continella,Alberto; Stagno,Fiorella; Nicolosi,Elisabetta. |
| ABSTRACT: The effect of basal zone defoliation on vines influences yield and ripening depending on the phenological stage and its intensity. Early basal defoliation (EBD) was carried out at flowering on the autochthonous Vitis vinifera (L.) cultivar ‘Nerello mascalese’ grown on the eastern slopes of Mount Etna, Sicily. The effects were evaluated over a two-year period. In the first year, the canopy retained 67 % of its original leaf area after EBD and in the second year, 58 %. Compared with control vines, mid-day leaf water potentials in the EBD vines enjoyed higher water status throughout the growing seasons in both years. EBD had no significant negative effects on yield but did have significant positive effects on the levels of total polyphenols, total... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera (L.); Photosynthesis; Canopy; Sustainability; Berry quality. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000600602 |
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