Summary:

The paper presents an assessment of the effect of under-crown irrigation on the yield of Fuji Kiki apple trees, in the third year of fruiting in the vegetation period of 2014. Sum of rainfalls during the vegetation period of 2014 was higher than mean rainfalls in the period of 90 mm. Dry spells in the analyzed vegetation period were longer, it was necessary to use a supplementary irrigation (total dose of water - 80 mm). On the basic of obtained results it was found that increase in apple trees yield was higher by 1,8 ·t∙ha-1 in comparison with the yield unirrigated plants.