portulaca oleracea, cirsium arvense, digitaria sanguinalis, amaranthus retroflexus, chenopodium album, convolvulus arvensis, echinochloa crus-galli, amaranthus hybridus, chondrilla juncea, datura stramonium, setaria pumila, setaria viridis, sinapis arvensis, sonchus asper, sorghum halepense, stellaria media