Winter cold hardiness of sweet cherry cultivars on Gisela 5 rootstock | Osetljivost novijih sorti trešnje na podlozi Gizela 5 na zimske mrazeve
2011
Milatović, D., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Đurović, D., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Vulić, T., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Đorđević, B., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Zec, G., Poljoprivredni fakultet, Beograd - Zemun (Serbia)
During the two consecutive winters (2008/2009 and 2009/1010) in the area of Šabac (Serbia) the absolute minimum air temperature of -16.3 deg C and -19.3 deg C were recorded. The effects of these temperatures on the freezing of flower buds were studied in 15 cultivars of sweet cherry grafted in Gisela 5 rootstock. The average frost damage of flower buds in the first year was 22%, while in the second year it was about three times higher and amounted to 65%. The highest winter cold hardiness was found in cultivars Regina, Chelan, Early Star, Summer Sun, and Kordia. On the other hand, the lowest winter cold hadiness was found in cultivars Noire de Meched, Skeena, Sylvia, Summit, and Early Lory. Indicators of productivity (blooming intensity, number of flowers per cluster, and yield per tree) had considerably more values in the first year than another.
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