hordeum murinum, polypogon viridis, bromus rigidus, bromus sterilis, crepis capillaris, erigeron sumatrensis, sisymbrium officinale, avena barbata, brassica nigra, bromus rubens, catapodium rigidum, euphorbia peplus, helminthotheca echioides, holcus lanatus, oxalis corniculata, plantago major, poa annua, polygonum aviculare, rumex crispus, rumex pulcher, trifolium repens, verbena officinalis