Publicação
Agrivoltaic trial preparation- Understanding spatial vineyard variability of cv. Encruzado at Tapada da Ajuda
| Resumo: | The increasing impact of climate change is leading to more frequent stress events that affect vineyard performance. The elevated temperature trend is increasing the vineyard's vulnerability to sunburn, resulting in reduced yield, changes in berry composition, and subsequently, alterations in wine quality. Photovoltaic panels deployed over crops, also known as agrivoltaics, are emerging as a potential solution to this problem, by providing shading and mitigating these effects in vineyards. The objective of this study is twofold, firstly to evaluate the vineyard’s spatial variability and define the best locations for study plants that can be fairly compared between treatments; secondly to extensively characterize the year 0 of the experiment before the installation of the agrivoltaic system. As the agrivoltaic structure placement was predefined in one large parcel of the vineyard, an initial study was performed to find plants, outside of this parcel, with similar performance. Two different plots were then defined: the control plot and the agrivoltaic plot. Throughout the thesis several parameters were collected to characterize the selected plants. Both weekly and phenological stage-specific vegetative and reproductive data were collected , as well as parameters regarding plant water status (e.g., stem water potential) and grape and wine composition. Overall, no significant differences were observed between the two plots in terms of vegetative and reproductive parameters, as both exhibited consistent and aligned development throughout phenological stages. Overall plants from both plots presented a leaf area of 4 m2. Some minor variations regarding phenological development were observed during the initial weeks. Regarding the stem water potential (SWP), there were no differences between the two plots at any phenological stage, with plants from both plots presenting moderate stress (~ >1.0 MPa) only at veraison and near harvest. An average yield of 2,3 Kg per plant was observed for both plots and must/wine analysis results also showed no discernible differences. In conclusion, these results confirm the successful selection of smart points for both plots, ensuring uniform conditions for a future study of the agrivoltaic trial. Further research should continue to analyze these parameters after solar panels installation and include an evaluation of sunburn damage and the aroma profile of the wine, to assess the photovoltaic panels impact on both the vineyard and wine quality. |
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| Autores principais: | Espiñeira, Mónica Jorge |
| Assunto: | solar panels grapevine performance spatial variability water status yield painéis solares estado hídrico rendimento variabilidade espacial videira |
| Ano: | 2023 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório da Universidade de Lisboa |
| Resumo: | The increasing impact of climate change is leading to more frequent stress events that affect vineyard performance. The elevated temperature trend is increasing the vineyard's vulnerability to sunburn, resulting in reduced yield, changes in berry composition, and subsequently, alterations in wine quality. Photovoltaic panels deployed over crops, also known as agrivoltaics, are emerging as a potential solution to this problem, by providing shading and mitigating these effects in vineyards. The objective of this study is twofold, firstly to evaluate the vineyard’s spatial variability and define the best locations for study plants that can be fairly compared between treatments; secondly to extensively characterize the year 0 of the experiment before the installation of the agrivoltaic system. As the agrivoltaic structure placement was predefined in one large parcel of the vineyard, an initial study was performed to find plants, outside of this parcel, with similar performance. Two different plots were then defined: the control plot and the agrivoltaic plot. Throughout the thesis several parameters were collected to characterize the selected plants. Both weekly and phenological stage-specific vegetative and reproductive data were collected , as well as parameters regarding plant water status (e.g., stem water potential) and grape and wine composition. Overall, no significant differences were observed between the two plots in terms of vegetative and reproductive parameters, as both exhibited consistent and aligned development throughout phenological stages. Overall plants from both plots presented a leaf area of 4 m2. Some minor variations regarding phenological development were observed during the initial weeks. Regarding the stem water potential (SWP), there were no differences between the two plots at any phenological stage, with plants from both plots presenting moderate stress (~ >1.0 MPa) only at veraison and near harvest. An average yield of 2,3 Kg per plant was observed for both plots and must/wine analysis results also showed no discernible differences. In conclusion, these results confirm the successful selection of smart points for both plots, ensuring uniform conditions for a future study of the agrivoltaic trial. Further research should continue to analyze these parameters after solar panels installation and include an evaluation of sunburn damage and the aroma profile of the wine, to assess the photovoltaic panels impact on both the vineyard and wine quality. |
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