Biodiversity of weed community in maize in the Cieszyńskie Foothills

Studies carried out in the years 2012–2018 on Cieszyńskie Foothills fields (26 localities in 7 boroughs) with maize in order to determine weed species and segetal association. Phytosociological relevés were made using Braun-Blanquet method with recommended parameters and coefficients (number of records, abundance, covering). 124 weed species were observed in maize, with a predominance of species from classes not associated with segetal association. Species from Stellerieta mediae class represented 44% of all species. Segetal species occurred with taxa from other phytosociological classes (55%) which were dominated by species belonging to meadow communities from Molinio-Arrhenatheretea and Artemisietea vulgaris class, presenting ruderal species and a few species from other classes, including Agropyro-intermedio repentis, Bidentetea tripartiti, Isoëto-Nanojuncetea, Querco-fagetea, Rhamno-Prunetea, and Trifolio-Geranietea sanguinei.