The Project Acquavitis investigated soil water recharge and its utilization by grapevines in 6 vineyards belonging to 3 contexts characterized by different geological, hydrogeological and climatic characteristics during the growing seasons of 2020 and 2021. Here, we present the results obtained in 3 vineyards, each one representing a different context. The soils of each vineyard have been characterized from a granulometric and mineralogic point of view. Soil samples were collected at least three times during summer 2020 and 2021 to measure the soil water content and water potential and to analyze the oxygen and hydrogen isotopic composition of soil water. Together with soils, precipitations, surface water and groundwater (from wells or caves in proximity of the studied areas) were also sampled. For understanding which water, the grapevines exploit during the growing season, the isotopic composition of the waters was compared to xylem sap extracted from grapevine branches during the same sampling periods. In the Ceroglie vineyard (in the Italian Karst), sampling frequency was incremented during 2021 for determining the influence of single precipitation events on soil water recharge and soil water use from vines. Geophysical surveys were also conducted to Capire il ciclo idrologico per una migliore gestione dell’irrigazione in viticoltura determine soil depth in the area. The obtained results suggest that, in general, grapevines mainly utilize water from the upper soil layers. This was influenced by the good water availability in soils due to the relatively abundant rainfall in spring and/or summer during the two years of this study.
Capire il ciclo idrologico per una migliore gestione dell'irrigazione in viticoltura: dalle precipitazioni al suolo e di nuovo alla vite
PESCHIUTTA M;DREOSSI G;MASIOL M;STENNI B;
2022-01-01
Abstract
The Project Acquavitis investigated soil water recharge and its utilization by grapevines in 6 vineyards belonging to 3 contexts characterized by different geological, hydrogeological and climatic characteristics during the growing seasons of 2020 and 2021. Here, we present the results obtained in 3 vineyards, each one representing a different context. The soils of each vineyard have been characterized from a granulometric and mineralogic point of view. Soil samples were collected at least three times during summer 2020 and 2021 to measure the soil water content and water potential and to analyze the oxygen and hydrogen isotopic composition of soil water. Together with soils, precipitations, surface water and groundwater (from wells or caves in proximity of the studied areas) were also sampled. For understanding which water, the grapevines exploit during the growing season, the isotopic composition of the waters was compared to xylem sap extracted from grapevine branches during the same sampling periods. In the Ceroglie vineyard (in the Italian Karst), sampling frequency was incremented during 2021 for determining the influence of single precipitation events on soil water recharge and soil water use from vines. Geophysical surveys were also conducted to Capire il ciclo idrologico per una migliore gestione dell’irrigazione in viticoltura determine soil depth in the area. The obtained results suggest that, in general, grapevines mainly utilize water from the upper soil layers. This was influenced by the good water availability in soils due to the relatively abundant rainfall in spring and/or summer during the two years of this study.
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