Influence of meteorological factors during blooming on sour cherry yield in Olsztyn region
2000
Grabowski, J. | Zielenkiewicz, J. (University of Warmia and Mazury, Olsztyn (Poland))
The effect of meteorological factors during sour cherry blooming on fruit yield was examined during 1983-99 in an orchard at Pozorty near Olsztyn (n.E. Poland). From all the studied factors (spring frosts, precipitation and a number of days with rain, temperature at noon) spring frosts caused the highest yield loses. A single frost ay blooming reduced sour cherry yield by 2.71 t/ha. Annual yields in the studied period showed a declining trend by 0.17 t/ha. This may be explained by the age of the trees, since the maximum productivity of sour cherry orchard falls on the 5th or 6th year after planting
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