text: zea mays, bothriochloa ischaemum, sonchus oleraceus, avena fatua, chenopodium album, cirsium arvense, convolvulus arvensis, fumaria officinalis, helminthotheca echioides, matricaria chamomilla, mentha arvensis, polygonum aviculare, polygonum bellardii, stachys annua, verbena officinalis, cichorium intybus, diplotaxis erucoides