A field experiment was conducted to study the productivity of Blackgram (Vigna mungo L.) under different sowing dates and sources of nutrients during summer. A field experiment was carried out during summer 2021 and 2022 at Agricultural Research Farm, Binjhagiri, Chhatabar, Faculty of Agricultural Sciences, IAS, SOADU, Bhubaneswar to study the productivity of Blackgram (Vigna mungo L.) under different sowing dates and sources of nutrients. consisted of three sowing dates D1: 15th February, D2: 22nd February & D3: 1st march in main plot and five nutrient management practices (F0: Control; F1: Seed treatment with Rhizobium+ PSB + FYM @ 5 t ha-1; F2: F1 + RDF (20:40:20 Kg N, P2O5 and K2O ha-1); F3: F2 + Foliar application of 2% NPK at pre flowering; F4-Seed treatment with beejamurth + FYM @ 5 t ha-1 enriched with jeevamurth and foliar spray of Panchyagavya at pre flowering stage) in subplot. Study revealed that yield attributing characters like pods per plant, pod length, pod weight, seeds per pod and test weight along with seed and stover yield was found highest in D1 and it was closely followed by D2. Among the nutrient management practices, FYM @ 5 t ha-1 + inoculated seed using Rhizobium + PSB + 20-40-20 Kg N, P2O5 and K2O ha-1 + spraying of 2% NPK 19:19:19 recorded the highest no of pods (28.1), seeds per pod (6.90) and test weight (43.56 g) along with seed (620.42 kg ha-1) and stover yield (1702.14 kg ha-1) over other treatments.