text: galinsoga parviflora, echinochloa crus-galli, stellaria media, amaranthus graecizans, amaranthus retroflexus, bidens tripartita, brassica napus, brassica rapa, capsella bursa-pastoris, chenopodium album, convolvulus arvensis, digitaria sanguinalis, elymus repens, euphorbia helioscopia, persicaria maculosa, raphanus sativus, setaria pumila, solanum nigrum, sonchus oleraceus, vicia sativa