zea mays, cirsium arvense, convolvulus arvensis, cynodon dactylon, digitaria sanguinalis, echinochloa crus-galli, equisetum arvense, malva sylvestris, persicaria maculosa, portulaca oleracea, setaria pumila, setaria viridis, veronica cymbalaria, veronica persica, linaria angustissima, sorghum halepense, trifolium campestre