text: mercurialis annua, amaranthus retroflexus, chenopodium album, echinochloa crus-galli, lamium purpureum, stellaria media, veronica persica, capsella bursa-pastoris, convolvulus arvensis, elymus repens, euphorbia helioscopia, lysimachia vulgaris, matricaria chamomilla, myosotis arvensis, persicaria lapathifolia, persicaria maculosa, plantago major, senecio vulgaris, sinapis arvensis, sonchus asper, sonchus oleraceus, thlaspi arvense, aethusa cynapium, equisetum arvense, euphorbia peplus, lysimachia arvensis, papaver rhoeas, solanum nigrum