poa annua, viola arvensis, apera spica-venti, capsella bursa-pastoris, arabidopsis thaliana, centaurea cyanus, elymus repens, lamium amplexicaule, myosotis arvensis, scleranthus annuus, tripleurospermum inodorum, veronica hederifolia, arenaria serpyllifolia, raphanus raphanistrum, veronica arvensis