By realising the importance of bio-stimulants, the present experiment was adopted in Black turmeric, consisting of nine treatments replicated thrice under the design of CRBD. The treatments were: T1: Vermicompost @5 t ha-1, T2: Chitosan @ 0.1% + Vermicompost @5 t ha-1, T3: Chitosan @ 0.15% + Vermicompost @5 t ha-1, T4: Chitosan @ 0.2% + Vermicompost @5 t ha-1, T5: Chitosan @ 0.25% + Vermicompost @5 t ha-1, T6: Chitosan @ 0.1% + Humic acid @ 0.2% + Vermicompost @ 5 t ha-1, T7: Chitosan @ 0.15% + Humic acid @ 0.2% + Vermicompost @ 5 t ha-1, T8: Chitosan @ 0.2% + Humic acid @ 0.2% + Vermicompost @5 t ha-1, T9: Chitosan @ 0.25% + Humic acid @ 0.2% + Vermicompost @5 t ha-1. The results showed that growth parameters like plant height (cm), collar girth (cm), leaf width (cm), leaf length (cm), number of leaves plant-1, number of tillers plant-1 and yield parameters like weight of rhizome plant-1 (g), weight of rhizome plot-1, estimated rhizome yield (t ha-1), number of primary rhizomes plant-1, number of mother rhizomes plant-1, dry recovery (%) was recorded highest in T9 (Chitosan @ 0.25% + Humic acid @ 0.2% +Vermicompost @ 5 t ha-1) followed by T8 (Chitosan @ 0.2% + Humic acid @ 0.2% + Vermicompost @ 5 t ha-1). Hence, bio-stimulants like chitosan and humic acid may be used as an ecofriendly input to enhance the production of black turmeric rhizome.