Influence of extracts of Chenopodium album and NaCl salinity on germination and seedling growth of soybean

Under lab conditions, bioassay studies were done to study the allelopathic effects of aqueous extracts (0, 10, 20, 40%) of different parts (leaf, root, leaf + root) of common lambsquarters (Chenopodium album L.) and salinity (0, 75 and 150 mM NaCl) on germination of soybean (Glycine max L.). The different types and concentrations of C. album. extract and salinity adversely inhibited all germination traits of soybean. The aqueous leaf extracts of C. album showed the highest inhibitory effects on studied germination traits of soybean, followed by root + leaf and root extracts, respectively. The degree of inhibition increased with increasing concentrations of extract and salinity. The extracts + NaCl drastically reduced the growth more than the separate effects of these stress treatments e.g., extract and salinity alone. The highest concentrations of extract and salinity reduced the radicle length by 63 and 72% respectively, while leaf extract + NaCl at highest concentrations caused 88% reduction than control. Radicle weight and plumule length and weight showed similar response.