Effect of sulphate and molybdate application on yield and biochemical constituents of soybean (Glycine max L. merrill)

The present study was undertaken to explore the possibility ot improving the biometric yield of soybean grains. Treatments involved were S doses (0, 20. 40 and 60 mg kg−1 soil) and Mo @ 0, 0.5, 1.0 and 1.5 mg kg−1 soil. The study showed that S doses upto 60 mg kg −1 soil caused marked increased in seed yield (5.79 to 6.18 g/plant) and protein content (36.81 to 39.22%), oil (19.38 to 22.63%), minerals (4.59 to 4.81%), tryptophan (1.36 to 1.56 g/16 g N), methionine (O.84 to 1.07 g/16 9 N) cystine (0.32 to 0.45 g/16 g N and cysteine (0.16 to 0.25 g/16 gN). Besides, application of Mo upto 1.00 mg kg−1 soil also caused substantial improvement in seed yield (5.85 to 6.09 g/plant) and biochemical constituents of soybean seeds viz. protein (37.91 to 38.57%), oil (20.56 to 21.67%), minerals (4.59 to 4.88%), tryptophan (1.20 to 1.37 g/16 g N), methionine (0.94 to 1.06 g/16 g N), cystine (0.35 to 0.45 g/16 9 N) and cysteine (0.18 to 0.24 g/16 9 N), accordingly, Interaction effect of Sand Mo application showed marked improvement in seed yield as well as biochemical constituents of nutritional significance.