text: beta vulgaris, echinochloa crus-galli, helminthotheca echioides, solanum nigrum, amaranthus retroflexus, chenopodium album, convolvulus arvensis, cynodon dactylon, daucus carota, digitaria sanguinalis, lepidium ruderale, marrubium vulgare, medicago sativa, persicaria lapathifolia, polygonum aviculare, rapistrum rugosum, sonchus arvensis