EN
The study was carried out in 1996 using Braun-Blanquet phytosociological method. On the soils formed from loose sands in rye crop conspicuous the Arnoserido-Scleranthetum while in potatoe crop the Digitarietum ischaemi association. On the soils formed from loamy sands in rye crop the Vicietum tetraspermae spergoletosum was conspicious while but in potaoes the Echinochloo-Setarielum association. In this favoured association the acidophilic plants occured frequently and in force. The mean soil reaction coefficient - R, reckoned on the ground of floristic communities composition confirmed, that the soils formed from loose sands were let run to weeds in a higher degree.