hordeum murinum, matricaria chamomilla, poa annua, aegilops geniculata, anthemis arvensis, avena barbata, carduus pycnocephalus, catapodium rigidum, chenopodium vulvaria, convolvulus arvensis, diplotaxis tenuifolia, lolium rigidum, malva sylvestris, sisymbrium officinale, sonchus oleraceus, trifolium nigrescens, urtica membranacea