hordeum vulgare, cirsium arvense, stellaria media, veronica persica, brassica napus, capsella bursa-pastoris, chenopodium album, convolvulus arvensis, equisetum arvense, lactuca serriola, lamium purpureum, lysimachia arvensis, matricaria chamomilla, papaver rhoeas, silene latifolia, sonchus asper, sonchus oleraceus, tripleurospermum inodorum, triticum aestivum