Abstract
Closed connection was found between particular weed communities and the edaphic agricultural complexes of the investigated field region (see Tab. l ). Taking adventage of bioindicative properties of weed communities the numeric values were found depicting present state of field biotops of investigated region concerning termic relations, humidity relations, soil pH, soil nitrogen content and biological activity of the soil. These resultes were further used as an aid to evaluate particular field biotops to agricultural use.