Vol. 11, Issue 5 (2022)

In hybrid rice combination of sulphur, zinc and biofertilizer with 100% RDF improved growth attributes and yield attributes over 100% RDF alone. The residual effect of combined source applied in hybrid rice was found significant on succeeding mustard crop. Growth parameters viz as plant height 30,60, 90 and at harvest (41.90 cm, 74.02 cm, 92.53 cm & 107.30 cm), number of hills per square meter (49.60), number of tillers per hill at 30 days (12.63), number of effective tillers per square meter 90 DAT (374.70), number of spikes per ear (12.70), length of ear (28.31cm), number of grains per ear (194.42), grain weight per ear (6.80 g), test weight 1000 grains (23.74), bundle weight per plot (22.15 kg), grain weight per plot (8.58), biological yield (184.59q/ha), grain yield (71.50 q/ha), straw yield (113.09 q/ha), harvest index (38.74%) and in case of mustard plant height 30,60, 90 and At harvest(14.48cm, 58.34cm, 112.48 cm & 128.88 cm), plant population per row (14.26), number of primary, secondary and tertiary branches (5.96, 13.71 & 13.90), number of pod per plant (367.89), number of grains per pod (13.53), test weight 1000 grains (4.38 g), grain weight per plot (3.56 kg), bundle weight per plot (9.32 kg) stover yield per plot (4.30 kg) biological yield (77.63 q/ha), grains yield (21.31 q/ha), stover yield (56.29 q/ha), harvest index (27.30%).

Highest grain yield of rice 71.50 q ha^-1 which was 26.61% higher than 100% RDF and highest grain yield of mustard 21.31 q ha^-1 which was 31. 31% higher than 100% RDF was recorded with the application T₁₁ 100% RDF+40 kg S+10 kg Zn+ Biofertilizer. Application of T₁₁ 100% RDF+40 kg S+10 kg Zn+ Biofertilizer +(100% RDF) was found economically superior over other treatments during both the years.

On the basis of the result of the present investigation it can be concluded that combination of 100% RDF+40 kg S+10 kg Zn+ Biofertilizer in hybrid rice with 100% RDF in mustard is utmost essential to get highest growth and yield hybrid rice-mustard cropping system of the farmers of central plain zone of Uttar Pradesh.