text: bromus tectorum, amaranthus retroflexus, atriplex patula, capsella bursa-pastoris, chenopodium album, cirsium arvense, convolvulus arvensis, echinochloa crus-galli, erigeron canadensis, lactuca serriola, lepidium draba, lolium perenne, polygonum aviculare, solanum nigrum, sonchus arvensis, stellaria media, thlaspi arvense, vicia villosa