papaver rhoeas, cirsium arvense, galium aparine, elymus repens, lactuca serriola, amaranthus retroflexus, atriplex patula, avena fatua, capsella bursa-pastoris, chenopodiastrum hybridum, chenopodium album, convolvulus arvensis, poa trivialis, sinapis arvensis, stellaria media, thlaspi arvense, veronica persica, equisetum arvense, erigeron canadensis, tripleurospermum inodorum, viola arvensis