echinochloa crus-galli, zea mays, amaranthus retroflexus, chenopodium album, convolvulus arvensis, elymus repens, setaria viridis, silybum marianum, sinapis arvensis, thlaspi arvense, tripleurospermum inodorum, capsella bursa-pastoris, cirsium arvense, euphorbia helioscopia, veronica persica