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Frost damage of grapevines in Poland following the winter of 2005/2006

Jerzy Lisek

Research Institute of Pomology and Floriculture
Pomologiczna 18, 96-100 Skierniewice, Poland
e-mail: jlisek@insad.pl

Following the winter of 2005/2006, an assessment of frost damage was carried out on the vines of fifty grape cultivars grown in the conditions of central Poland. The minimum winter temperature of –31.6°C was recorded on 23 January 2006. The best tolerance to extremely low temperatures (no damage to shoots or buds) was shown by the American hybrids ‘Alwood’ and ‘Zilga’ of the Vitis labruscana group. Some damage was found on the vines of the French-American hybrids ‘Marechal Foch’ and ‘Aurora’. The buds of the V. vinifera cultivars all froze. Frost tolerance of the vines classed as interspecific hybrids varied from 45% of frozen buds (‘Sibera’) to 100% (‘Medina’). Frost damage occurred on the shoots lying above the snow line. The plant parts covered with snow were not exposed to significant damage, even in susceptible cultivars.

Lisek J., 2007. Frost damage of grapevines in Poland following the winter of 2005/2006. Folia Horticulturae 19/2: 69-78.