text: cynodon dactylon, amaranthus retroflexus, chenopodium album, cirsium arvense, convolvulus arvensis, digitaria sanguinalis, erigeron canadensis, polygonum aviculare, setaria pumila, setaria verticillata, amaranthus hybridus, chenopodiastrum hybridum, echinochloa crus-galli, heliotropium europaeum, hibiscus trionum, portulaca oleracea, salsola kali, setaria italica, solanum nigrum, sonchus asper