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Climate analysis to introduce resistant vines in the protected areas of the Castelli Romani regional park

M.C. Serra, F. Cecchini, M.A. Palombi, N. Calanducci, M. Morassut, N. Bevilacquak - CREA

Ten resistant cultivars were planted in the experimental vineyard of CREA, in Velletri. The cultivars used were crossbreeds established by the University of Udine, the Institute of Applied Genomic(IGA)and Vivai Cooperativi Rauscedo(VCR). They are downy mildew resistant and powdery mildew tolerant cultivars; so, they require a reduced number of fungicide treatments. Agronomical adaptability to Latium environmental conditions were analyzed for three vegetative seasons (2017-2019).

The resistance to fungal diseases suggests promoting resistant vines in protected areas, where viticulture must be characterized by a very low environmental impact and at the same time must be able to produce wines of a certain value. Resistant cultivars can be used to produce wines of a certain typicality as IGP (Reg. 479/2008, art. 34).

The aim of this study was to evaluate whether the climatic conditions of some sites of Castelli Romani Regional Park were suitable for the cultivation of resistant vines. With this objective, the weather conditions detected in Velletri have been considered and compared with those recorded in some other sites.

Some meteorological variables have been considered and some bioclimatic indices were calculated: Growing Degree Days (DGG), Heliothermic Index (HI), Rainfall Rate (RR), Night Freshness Index(IFN), (OIV, 2012), according to the climatic characterization of grape-growing regions (Tonietto and Carbonneau, 2004).

Keywords: resistant vines, bioclimatix index, grape vine sustainability.

Article based on the poster presented at the at Enforum Web (5-7 de mayo de 2020)

Published on 03/10/2021
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