Publicação
Effect of deficit irrigation and training system on the physiological, agronomic and quality parameters of Touriga Franca grapevine (Vitis vinifera L.)
| Resumo: | The increase in the frequency and intensity of extreme weather events is one of the main effects of climate change, with particularly negative consequences for the development of agricultural activity. As water is one of the most limiting factors in yield, irrigation management is a critical factor for the future in a context of water scarcity. This study aims to implement three irrigation regimes (irrigation deficit with 25% and 50% of crop evapotranspiration (ETc) and full irrigation (100% ETc)) and two pruning systems (unilateral Cordon and Guyot) and evaluate their effects on physiological, agronomic and quality parameters in the Touriga Franca (Vitis vinifera L.) variety, in a commercial vineyard located in the Douro region. Field studies were carried out during 2019 in a commercial organic vineyard, located at Quinta do Romeu (41º53´02´´N, 7º08´00´´W, 326 m altitude) in the Northeast of Portugal. Agronomic, physiological and grape quality parameters were evaluated in the different treatments. The results showed that the plants that received the highest amount of irrigation were the ones that showed the best physiological and agronomic performance. In most of the quality parameters of the musts, no differences were observed between treatments, except for the total soluble solids (TSS) content. The deficit irrigation treatment (25% ETc), pruned in Cordon, showed the lowest values, while the 100% ETc full irrigation treatment pruned in Guyot was the one with the highest values. The results presented are from the first year of trials in a study that will take place over several years. Thus, the conclusions presented are still preliminary. |
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| Autores principais: | Furline, Vitor Gonçalves |
| Assunto: | Viticulture Vitis vinifera L. Water use efficiency Pruning system |
| Ano: | 2021 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Instituto Politécnico de Bragança |
| Idioma: | inglês |
| Origem: | Biblioteca Digital do IPB |
| Resumo: | The increase in the frequency and intensity of extreme weather events is one of the main effects of climate change, with particularly negative consequences for the development of agricultural activity. As water is one of the most limiting factors in yield, irrigation management is a critical factor for the future in a context of water scarcity. This study aims to implement three irrigation regimes (irrigation deficit with 25% and 50% of crop evapotranspiration (ETc) and full irrigation (100% ETc)) and two pruning systems (unilateral Cordon and Guyot) and evaluate their effects on physiological, agronomic and quality parameters in the Touriga Franca (Vitis vinifera L.) variety, in a commercial vineyard located in the Douro region. Field studies were carried out during 2019 in a commercial organic vineyard, located at Quinta do Romeu (41º53´02´´N, 7º08´00´´W, 326 m altitude) in the Northeast of Portugal. Agronomic, physiological and grape quality parameters were evaluated in the different treatments. The results showed that the plants that received the highest amount of irrigation were the ones that showed the best physiological and agronomic performance. In most of the quality parameters of the musts, no differences were observed between treatments, except for the total soluble solids (TSS) content. The deficit irrigation treatment (25% ETc), pruned in Cordon, showed the lowest values, while the 100% ETc full irrigation treatment pruned in Guyot was the one with the highest values. The results presented are from the first year of trials in a study that will take place over several years. Thus, the conclusions presented are still preliminary. |
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