argentina anserina, elymus repens, galinsoga parviflora, alopecurus myosuroides, capsella bursa-pastoris, lysimachia arvensis, matricaria discoidea, myosotis arvensis, poa annua, poa trivialis, tripleurospermum inodorum, veronica agrestis, veronica persica, chenopodium album, polygonum aviculare, stellaria media