allelopathic potentials of eight barley cultivars on brassica jucea (l) czern. and setaria viridis (l) p. beauv.

the allelopathic potential of the foliage tissues of eight barley cultivars was investigated using seedlings bioassays of indian brown mustard (brassica juncea) and green foxtail (setaria viridis) as typical broadleaf and grass weeds of the croplands. the correlations of allelochemical compounds with seed germination of weeds were determined. the barley cultivars used were jackson, bronco, cdc dolly, b1602, harrington, una80, stander, and tr251. three dilutions of the extracts of each barley cultivar (20, 10 and 5 g/l) plus deionized distilled water, as a control, were assayed on the target weeds. the effects of barley cultivars and extract concentrations on seed germination and radicle and shoot lengths of the target weed seeds were highly significant (p