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Agroclimatic indices and the distribution of grapevine varieties in Republic of Croatia

Viticulture and wine production in Croatia have a long tradition and a great economic and cultural interest in the society. Climatic conditions are among the most important factors for a successful and cost-effective cultivation of grapevine. They give basic thresholds for the selection of the grape variety, viticulture production system and they affect the characteristics of the grapes, and ultimately the quality of the wine. Meteorological elements such as air temperature, wind, humidity, precipitation, solar radiation have a great affect on plants.The aim of this work was to determine the geographical areas with the optimal conditions for the growth and development of the grapevine in Croatia. Data from the 84 meteorological stations were taken from the database of Meteorological and Hydrological service of Agriculture (period from years 1961-2014) and trends for 30 year periods (1961-1990, 1985-2014) were determined. We have calculated agroclimatic indices: Growing degree-days (GDD or WI), Heliothermal index (HI), Cool night index (CI) and Average growing season temperature (Tgs). The results of indices and suitability of wine growing areas for cultivation of grapevine in Croatia are compared with current wine growing regions and distribution of grapevine varieties in Republic of Croatia.

climate, agroclimatic indices, grapevine, variety

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