eragrostis minor, setaria viridis, bryum argenteum, digitaria sanguinalis, erigeron canadensis, arenaria serpyllifolia, calamagrostis epigejos, capsella bursa-pastoris, chenopodium striatiforme, convolvulus arvensis, echinochloa crus-galli, lepidium densiflorum, polygonum arenastrum, senecio viscosus, medicago lupulina, viola arvensis