Distribution of invasive weeds on the territory of AP Vojvodina.

Invasive weed species occur as companions of various human activities. They occupy different ruderal, urban and rural habitats, which is followed by their free spreading in nature. In recent years, spread of invasive weed species on the territory of AP Vojvodina became more pronounced, and the number of invasive weeds is constantly increasing. On the territory of AP Vojvodina, several ruderal weed species are found among invasive weeds, threatening agricultural production, human and animal health and the environment in general. The greatest economic significance have ruderal weed species, such as: Sorghum halepense (L.) Pers, Rumex crispus L., Carduus acanthoides L., Conyza canadensis L., Urtica dioica L., Chenopodium album L., Rubus caesius L., Arctium lappa L., and established invasive weed species Ambrosia artemisiifolia L., Asclepias syriaca L., Iva xanthofolia L. and Artemisia vulgaris L. Established coverage of invasive weed species is within a range of 30-95%, while the presence level marked V is found for Ambrosia artemisiifolia and Artemisia vulgaris, and presence level marked I for Amaranthus retroflexus, Asclepias syriaca and Cuscuta campestris.