author(s)
Avijit Kr. Dutta, Arpan Mondal and Subrata Ghosh

abstract
A field trial comprising five onion varieties and three non-chemical nutrient sources was conducted at the organic experimental farm of RKMVERI, Ranchi, during post-kharif season. The experiment was conducted for two consecutive years (2022-23 and 2023-24) and was designed using a FRBD spread across 45 experimental plots [five varieties, viz., V1(Sukh Sagar), V2(Agrifound Dark Red), V3(N-53), V4(Pusa Sona), & V5(Pusa Riddhi); and three treatments, namely, T₁ (NCSN-1), T₂ (NCSN-2), & T₃ (NCSN-3) with three replications each]. Several growth, yield, and quality attributes were considered for evaluation. Results showed that growth and yield attributes of five onion varieties were significantly influenced by T₁, where Jeevamrutha was used as non-chemical amendment, but the quality-contributing traits were greatly influenced by T₂, where a biodynamic formulation (BD-501) was applied as foliar feeding. Findings also revealed that Agrifound Dark Red, N-53, and Sukh Sagar are the best- performing post-kharif onion varieties for the eastern Indian plateau.