arabidopsis thaliana, gnaphalium uliginosum, matricaria chamomilla, poa annua, capsella bursa-pastoris, chenopodium album, elymus repens, fallopia convolvulus, galium aparine, myosotis arvensis, persicaria lapathifolia, plantago uliginosa, scleranthus annuus, vicia hirsuta, viola arvensis, galinsoga parviflora, persicaria maculosa, ranunculus repens, sonchus asper, stellaria media, veronica arvensis, vicia tetrasperma