Folia Horticulturae

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An attempt at determining the areas in north-eastern Poland with meteorological conditions favouring or hindering fruit production

Jan Grabowski*, Zdzisław Kawecki**, Anna Bieniek**

**Department of Meteorology
**Department of Horticulture
**University of Warmia and Mazury in Olsztyn
**Prawocheńskiego 21, 10-757 Olsztyn, Poland
**e-mail: kat.ogr@uwm.edu.pl

In the present study the influence of selected meteorological factors on the yield of apples, pears, plums and cherries was examined. The average yields of fruits and the course of meteorological factors were analysed in 6 macroregions of north-eastern Poland during the period from 1979 to 1998. The following factors were evaluated: air temperature, precipitation, relative humidity, actual insolation and the number of days with frost, in April and May in the years when the maximum yield was ≥10 t ha-1 and the minimum yield was 5 t ha-1. An analysis of the results showed that the yield of fruits in this region of Poland depends mainly on the meteorological conditions in April and May. Of the analysed macroregions of north-eastern Poland, the eastern part of the North Podlasie Lowland, Gdańsk Coastland and North Mazovia Lowland proved to be the most favourable to horticultural production.

Grabowski J., Kawecki Z., Bieniek A., 2004. An attempt at determining the areas in north-eastern Poland with meteorological conditions favouring or hindering fruit production. Folia Horticulturae 16/2: 103-110.