zea mays, digitaria ischaemum, cirsium arvense, polygonum aviculare, setaria viridis, capsella bursa-pastoris, centaurea cyanus, convolvulus arvensis, echinochloa crus-galli, elymus repens, matricaria discoidea, raphanus raphanistrum, setaria pumila, spergula arvensis, trifolium arvense, tripleurospermum inodorum, vicia villosa, viola arvensis