echinochloa crus-galli, zea mays, chenopodium album, elymus repens, erysimum cheiranthoides, galinsoga parviflora, persicaria lapathifolia, agrostis stolonifera, amaranthus retroflexus, argentina anserina, cirsium arvense, potentilla reptans, rorippa sylvestris, sonchus asper, polygonum aviculare, sonchus oleraceus, tripleurospermum inodorum