STRUCTURE AND POPULATION DYNAMICS OF ASCLEPIAS SYRIACA L. IN THE AGRICULTURAL LAND

in three habitat types (abandoned vi -neyards, grassland and road side) in the district of Veľký Krtis in Central Slovakia. Three permanent research plots (1 m × 1 m) were established and monitored during the growing season in 2012. The density of the population at the end of the growing season ranged from 15 to 29 stems per m