helminthotheca echioides, anthemis arvensis, lolium multiflorum, raphanus raphanistrum, sonchus oleraceus, anacyclus radiatus, avena barbata, bromus diandrus, daucus carota, galactites tomentosa, hordeum murinum, medicago polymorpha, papaver rhoeas, phalaris brachystachys, phalaris paradoxa, poa trivialis, rumex crispus, silybum marianum, vicia sativa