be, arr. nivelles, vicia hirsuta, veronica arvensis, aphanes arvensis, capsella bursa-pastoris, lysimachia arvensis, vicia sativa, chenopodium album, stellaria media, cirsium arvense, poa annua, viola arvensis, arenaria serpyllifolia, senecio vulgaris, veronica persica, polygonum aviculare, fallopia convolvulus, apera spica-venti, papaver rhoeas, matricaria chamomilla, centaurea cyanus, myosotis arvensis, sonchus asper, arabidopsis thaliana, convolvulus arvensis, scleranthus annuus, plantago lanceolata, papaver purpureomarginatum, scleranthus polycarpos, galium aparine, equisetum arvense, papaver dubium, elymus repens, veronica hederifolia, trifolium repens, rumex angiocarpus, rumex crispus, alopecurus myosuroides, sonchus oleraceus, rumex acetosella, lamium purpureum, medicago lupulina, raphanus raphanistrum, persicaria maculosa, plantago major, achillea millefolium, lolium perenne, erigeron canadensis, ranunculus repens, euphorbia helioscopia, tripleurospermum inodorum