matricaria chamomilla, lepidium ruderale, atriplex oblongifolia, bromus sterilis, hordeum murinum, polygonum aviculare, setaria pumila, agropyron cristatum, amaranthus retroflexus, atriplex tatarica, chenopodium vulvaria, convolvulus arvensis, eragrostis minor, erigeron canadensis, lolium perenne, thlaspi arvense, trifolium arvense, vicia hirsuta