zea mays, amaranthus hybridus, ambrosia artemisiifolia, chenopodium album, convolvulus arvensis, chenopodiastrum hybridum, setaria viridis, atriplex patula, cynodon dactylon, elymus repens, galinsoga parviflora, lathyrus tuberosus, lepidium draba, lolium perenne, polygonum aviculare, portulaca oleracea