Assessment of Micro and Secondary Nutrient Combinations for Yield, Yield Attributes, and Economic Profitability of Mustard in Mid Indo-Gangetic Plains of Bihar

An on-farm trial was established at Saran district of Bihar, aiming to assess the different combinations of micro and secondary nutrients on yield and economic profitability of mustard (var. Rajendra suphalam). The experiment comprised three treatments i.e., T1: RD-S+Zn (Farmer practices), T2: RD-S+B and T3: RD-S+B+Zn and seven replications performed under a completely randomized block design during 2018-19. Results of the experiment revealed that combined application of sulphur, boron and zinc significantly improved the number of seeds per siliqua: 37.2%, stover yield: 12.3% & seed yield: 33.3% over farmers practice (T1: RD-S+Zn). The highest seed yield and gross return in treatment T3: RD-S+B+Zn was well reflected in the maximum net return (Rs. 40954.0 ha-1) and benefit-cost ratio (2.29). In conclusion, the combined application of sulphur, boron and zinc was performed better for mustard cultivation in the middle Indo-Gangetic plains of Bihar.