Effect of sulphur and nitrogen on symbiotic nitrogen fixation in seedlings of lucerne (Medicago sativa L.)
Bordeleau, L.M.; Giroux, M.; Ouellet, R.; Antoun, H.
Canadian Journal of Plant Science 61(3): 639-645
In a sol. culture experiment, the effect of S and N on shoot and root wt., nodulation and nitrogenase activity was studied in lucerne Saranac seedlings inoculated with a very efficient strain of Rhizobium meliloti. Shoot and root wt. and nodulation index increased with increasing N and S conc. The rate of increase of shoot wt. and nodulation index was not constant over the range of S conc. studied. There were S X N interactions on shoot and root wt.