text: chenopodium album, elymus repens, artemisia vulgaris, cirsium arvense, vicia villosa, achillea millefolium, arenaria serpyllifolia, capsella bursa-pastoris, echinochloa crus-galli, erigeron canadensis, fallopia convolvulus, lamium amplexicaule, lycopsis arvensis, lysimachia arvensis, scleranthus annuus, senecio vernalis, setaria viridis, sonchus arvensis, spergula arvensis, stellaria media, vicia hirsuta, viola arvensis, arctium lappa, centaurea cyanus, crepis tectorum, thlaspi arvense