hordeum murinum, anacyclus clavatus, anthemis arvensis, bromus diandrus, bromus hordeaceus, bromus rubens, bromus tectorum, capsella bursa-pastoris, convolvulus arvensis, echium plantagineum, lolium rigidum, malva sylvestris, papaver dubium, papaver rhoeas, polygonum aviculare, senecio vulgaris, sisymbrium officinale, galium aparine