engleski

Influence of weather and climatic conditions on the viticultural production in Croatia

Viticulture is strongly influenced by weather and climate conditions. The aim of this research is to increase the adaptability and reduce the vulnerability of Croatian viticulture related to the impact of climate change on grape and wine production through the revision wine growing zones in Croatia (analysis of existing zones and possible proposal of the new ones). Data from the 79 meteorological stations of the Croatian Meteorological and Hydrological Service (DHMZ) were used for calculations of the Huglin Index (HI), for the period 1961–2018. In the last 30 years. HI increased by 200–300°C compared to the reference period 1961–1990. The research also includes the impact of temperature conditions on the harvest date and vine grape quality (sugar content and total acidity) through monitoring of four cultivars (Chardonnay, Graševina, Merlot and Plavac mali) for the period 2001–2018. Uvometric data for the considered cultivars have been analyzed in 2017 and 2018. Significant changes in distribution of wine growing zones and extension of suitable areas for grapevine cultivation to areas with higher elevation was detected. Significant effect of increased temperatures on earlier harvest dates, increased sugar content and reduced total acidity was observed.

agroclimatic indices ; climate ; grapevine ; viticultural zones

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