text: echinochloa crus-galli, amaranthus retroflexus, chenopodium album, cirsium arvense, convolvulus arvensis, setaria pumila, solanum nigrum, chenopodiastrum hybridum, erigeron canadensis, galinsoga parviflora, lamium purpureum, linaria vulgaris, portulaca oleracea, rorippa sylvestris, sonchus arvensis