Influence of Sulphur and Zinc on Growth, Yield Attributes and Economics of Cowpea (Vigna unguiculata L.)

The experiment was laid out in Randomized Block Design with nine treatments each replicated thrice on the basis of one year of experimentation. The treatments which are T1: 2% Sulphur+0.5% zinc, T2: 2% Sulphur+ 1% Zinc, T3: 2% Sulphur + 1.5% Zinc, T4: 3% Sulphur + 0.5% Zinc, T5: 3% Sulphur +1% Zinc, T6: 3% Sulphur +1.5% Zinc, T7: 4% Sulphur + 0.5% Zinc, T8: 4% Sulphur+ 1% Zinc, T9: 4% Sulphur +1.5% Zinc, T10 N:P: K 20:40:40 kg/ha. The results showed that application of 4% Sulphur+ 1.5% Zinc was recorded significantly higher plant height (79.17 cm), nodules/ plant (30.93), Plant dry weight (22.83 g/plant), No. of pods/ plant (12.14), Test weight (100.23 g), maximum crop growth rate (8.82g/m2/day). However, higher Seed yield (1.32 t/ha), Stover Yield (3.48 t/ha) gross returns (INR84971.50/ha), net return (INR60594.40/ha) and benefit cost ratio (1.28) were obtained with application of 4% Sulphur+1.5% Zinc as compared to other treatments.