viola arvensis, capsella bursa-pastoris, stellaria media, apera spica-venti, aphanes arvensis, arabidopsis thaliana, draba verna, lamium amplexicaule, lamium purpureum, myosotis stricta, poa annua, tripleurospermum inodorum, veronica arvensis, centaurea cyanus, chenopodium album, scleranthus annuus, vicia hirsuta