panicum capillare, erigeron canadensis, poa pratensis, amaranthus retroflexus, arrhenatherum elatius, berteroa incana, bryum argenteum, lepidium ruderale, lolium perenne, medicago lupulina, setaria verticillata, setaria viridis, atriplex tatarica, bromus tectorum, elymus repens, plantago major, reseda lutea, sinapis arvensis, sonchus oleraceus