A field experiment was conducted at Crop Research Farm, SHUATS, Allahabad in 2016 Kharif season to assess the effect of different sources and levels of nutrients on growth, yield and grain protein content of Black rice cv. ‘Chakhao Amubi’. The experiment was laid out in Randomized Block Design, replicated thrice and consisted of 12 treatments. The results revealed that different sources of nutrients along with different levels of RDF (Recommended Dose of Fertilizer i.e., 75-40-40 N-P-K kg ha-1 for Uttar Pradesh Kharif season) have significant effect on growth, yield, grain protein content and economics of cultivation of black rice. Treatment T11 (FYM @ 10 tonnes + 100 % RDF through inorganic sources) performed significantly higher than the other treatments with higher number of effective tillers/hill (11.70), panicle length (25.56 cm), number of spikelets/panicle (230.40), number of filled spikelets/panicle % (87.67), test weight (24.66 g), grain protein content (13.20 %) and consequently grain yield (5016 kg ha-1) and straw yield (13550 kg ha-1). This research depicts that integrated use of organic and inorganic sources of nutrients to be the best method for increasing productivity of Black rice.