text: amaranthus retroflexus, mercurialis annua, persicaria maculosa, calystegia sepium, capsella bursa-pastoris, chenopodium album, cynodon dactylon, echinochloa crus-galli, galinsoga parviflora, lamium purpureum, oxalis stricta, plantago major, polygonum aviculare, rumex crispus, artemisia vulgaris, convolvulus arvensis, erigeron annuus, euphorbia helioscopia, solanum nigrum, sonchus oleraceus, sorghum halepense, stellaria media