senecio viscosus, erigeron canadensis, atriplex sagittata, bromus tectorum, cirsium arvense, lolium perenne, artemisia vulgaris, capsella bursa-pastoris, chenopodiastrum hybridum, chenopodium album, lepidium ruderale, poa annua, sisymbrium altissimum, sonchus oleraceus, tripleurospermum inodorum