Effect of Azotobacter chroococcum and tryptophan on the inoculation of soybean (Glycine max (L.) Merril) with Rhizobium japonicum.
D001395:Azotobacter; D009586:Nitrogen Fixation; D010937:Plant Growth Regulators; D012231:Rhizobium; D013025:Glycine max; D014364:Tryptophan / Q000494:pharmacology*
D010937:Plant Growth Regulators; D014364:Tryptophan