text: digitaria sanguinalis, setaria verticillata, echinochloa crus-galli, amaranthus retroflexus, echinochloa colonum, portulaca oleracea, amaranthus albus, chenopodium album, convolvulus arvensis, cynodon dactylon, heliotropium europaeum, lolium rigidum, setaria pumila, setaria viridis, solanum nigrum, sonchus oleraceus, sorghum halepense