poa annua, polycarpon tetraphyllum, anacyclus radiatus, capsella rubella, cichorium intybus, cynodon dactylon, eleusine indica, helminthotheca echioides, hordeum murinum, oxalis corniculata, plantago major, polygonum aviculare, portulaca oleracea, sagina apetala, taraxacum officinale, trisetaria panicea