Summary:

At field experiment carried out in the years 2009-2010 at the very light soil in Kruszyn Krajeński near Bydgoszcz, the influence of drip irrigation on the chosen features of height of cup plant was studied. The cup plants were cultivated from the micropropagation seedlings. The experiment was done as a one factorial in 4 replications. The main factor of the experiment was irrigation done with following variants: O- without irrigation (control plots), K- with drip irrigation. Drip irrigation scheduling was done according to tensiometers indications. Experimental material were cup plants seedlings from micropropagation. Irrigation significantly influenced on the height increase of the leaves fresh mass and the number of the leaves. Irrigation also increased the transpiration leaf area and the dry matter content.