text: digitaria sanguinalis, setaria pumila, convolvulus arvensis, setaria viridis, amaranthus retroflexus, chenopodium album, chondrilla juncea, cirsium arvense, echinochloa crus-galli, elymus repens, erigeron canadensis, lepidium draba, linaria vulgaris, portulaca oleracea, solanum nigrum, sonchus oleraceus, xanthium orientale