hordeum distichon, chenopodium album, convolvulus arvensis, anthemis arvensis, capsella bursa-pastoris, cirsium arvense, equisetum arvense, euphorbia helioscopia, galinsoga parviflora, gnaphalium uliginosum, persicaria maculosa, poa annua, rumex crispus, sinapis arvensis, stellaria media, thlaspi arvense, veronica persica