Although the strawberry (Fragaria x ananasa Duch.) is a self-pollinating plant, presence of pollinators is important to achieve the best yields. The experiment was performed in 2019 on the laboratory field of the Biotechnical Faculty. Activity of pollinators on strawberry flowers and differences in the pomological properties of fruits in different covering systems were investigated. Cultivar ‘Clery’ plants were planted on a ridge in a two-row system covered with black foil, under which was an irrigation pipe. Part of the ridge was covered with an anti-hail net on high arches (high tunnel), another part was covered over low arches (low tunnel), and a third was not covered (control). We included 10 strawberry plants for each treatment. The fruits were harvested gradually, and their number, development and yield weight were recorded for each sample plant. We also performed measurements of pomological properties three times (height, width, thickness, weight, firmness and total soluble solids). The results showed that fruit in the low tunnel were 6% lighter and 16% lighter in the high tunnel compared to the control. Control plants had 11.7% of deformed fruit, while in the low tunnel there were 17.1% and in the high 20.7% of such fruit. Inversely proportional to the increase in share of deformed fruit, their height, width and thickness decreased. The presence of pollinators was also monitored four times during flowering. In bad and colder weather, solitary bees and hover flies predominated on flowers. On a warm and clear day, however, honeybees were most numerous.
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