EN
The work shows results of lysimeter research, from Jaworki near Szczawnica in the years 1992-1995, on comparison of evapotranspiration and infiltration rates from meadows supplied only by rain waters and meadows used in addition to rainfall also the capillary conductivity from the groundwater at the depth 60 cm. Based on the obtained results, it was found that under mountain conditions and in the average years occurrence of capillary movements from the groungwaters is not causing significant yield increase of grassland. However, it has decisive influence on the amount of water used for evapotranspiration, causing its considerable increase as compared to meadows without any contact with groundwater. Plants of meadows, additionally supplied by capillary movement from groundwater, use about 20 percent more water for production of 1 kg DM than the sward of meadows without groundwater. Occurrence of groundwater at 60 cm depth causes about 70 percent increase in the amount of water percolating from the aeration zone.