A plant growing experiment was carried out in a three-aisle foil tunnel, built with the double, pumped foil technology. Cucumber plants were grown in a substrate (rock wool). The nutrients were provided as a nutrient solution through a fertilization system. The experiment consisted of 3 combinations and each combination comprised 4 replications. In the control, the plants had access only to natural sunlight and only as much as natural conditions allowed. In the second combination, the plants were lit with HPS lamps made of a single-body, inseparable GREEN ORX2-400 luminaire, adapted to power a 400W light source. In the third combination, plants were lit with NEONICA GROWY LED PLUS 318 LED lamps. The main aim of the research was to test and compare the effect of LED lamps and sodium lamps (HPS) on the content of nutrients in Cucumis sativus L. fruits. Lighting Cucumis sativus L. with sodium and LED lamps results in higher fruit yields. Providing plants with artificial light (HPS and LED lamps) accelerates the harvest of Cucumis sativus L. The fruit of Cucumis sativus L., lit with HPS lamps is characterized by a higher content of nitrogen. The fruit of Cucumis sativus L. lit with LED diodes is characterized by a higher content of potassium, phosphorus, calcium and copper. Lighting Cucumis sativus L. with LED and HPS lamps, compared to plants with natural light, reduced the content of iron in cucumber fruits.

26.4.2021