text: nicotiana tabacum, echinochloa crus-galli, galinsoga parviflora, bidens tripartita, chenopodium album, cirsium arvense, equisetum arvense, galinsoga quadriradiata, gnaphalium uliginosum, matricaria discoidea, poa annua, senecio vulgaris, setaria pumila, sonchus arvensis, sonchus asper, spergula arvensis, tripleurospermum inodorum, viola arvensis