Ecological indices of weeds of potato agrophytocoenosis in Vrulja (Pljevlja district) [Montenegro (Serbia and Montenegro)] as confidential indicators of environmental conditions

The paper present ecological study of weed flora of potato crop in mountain-continental part of Montenegro, at locality Vrulja, Pljevlja district (Montenegro). Previous floristic analysis resulted with 51 weed species among which annuals were dominant. In order to give complete ecological definition of potato agrophytocoenosis analysis of basic ecological indexes of moisture, pH reaction, nutrients, light and temperature was done. It resulted with domination of following categories of species: mesotermophilic, semisciophilic to heliophilic, kserophilic to mesophilic, and species indicators of soils moderate rich in nutrients.