Meteorological conditions of the blooming of nanking cherry (Prunus tomentosa Thunb.) and their
impact on the yield
Jan Grabowski*, Zdzisław Kawecki**, Zofia Tomaszewska*
**Department of Meteorology
**Department of Horticulture
**University of Warmia and Mazury
**Plac Łódzki 1, 10-757 Olsztyn, Poland
The study was carried out in the years 1997-2005 to investigate phenophases of
nanking cherry shrubs and its yielding under climatic conditions of the Warmia
region (Olsztyn). The plants were obtained in Olsztyn from the seeds of nanking
cherry shrubs originating from the eastern part of Belarus (Gorki). One-year old
seedlings were planted at 3×2 m apart in grey-brown podsolic soil. Investigations
were carried out on 40 shrubs from the second year after planting. The data on the
beginning of vegetative season, the blooming period and the harvest time were
recorded every year. The yield per bush was also recorded. More important
climatic factors of the blooming season were analyzed as well, i.e.: mean daily air
temperature, the sum of minimal temperatures from the beginning of the vegetative
season till the end of the blooming, ground frosts, precipitation and its effect on
yielding over a period of 9 years.
Phenophases were found to be diversified depending on experimental year. The
greatest diversity was observed for terms at the start of the vegetative season. The
difference between the extreme terms reached up to 6 weeks. On average, the blooming
period occurred in April. The statistical analysis indicated that the yield
of nanking cherry was significantly affected by mean temperatures of the blooming
period, minimal temperatures, ground frosts, and precipitation.
Grabowski J., Kawecki Z., Tomaszewska Z., 2007.
Meteorological conditions of the blooming of nanking cherry (Prunus tomentosa Thunb.) and
their impact on the yield. Folia Horticulturae 19/1: 45-52.