zea mays, digitaria sanguinalis, echinochloa crus-galli, persicaria lapathifolia, solanum nigrum, capsella bursa-pastoris, chenopodium album, daucus carota, helminthotheca echioides, lysimachia arvensis, polygonum aviculare, sonchus oleraceus, bromus hordeaceus, prunella vulgaris, stachys palustris