medicago sativa, lolium perenne, capsella bursa-pastoris, erigeron canadensis, plantago major, echinochloa crus-galli, lactuca serriola, lysimachia arvensis, stellaria media, tripleurospermum inodorum, viola arvensis, artemisia vulgaris, carduus acanthoides, hordeum vulgare, rumex crispus, sonchus oleraceus, tragopogon dubius, trifolium repens