zea mays, cynodon dactylon, echinochloa crus-galli, amaranthus retroflexus, convolvulus arvensis, equisetum arvense, mercurialis annua, persicaria maculosa, polygonum aviculare, portulaca oleracea, setaria pumila, setaria viridis, sonchus oleraceus, veronica hederifolia, equisetum telmateia, trifolium repens