Organic farming practices including the use of cow-based nutrient sources FYM, Panchagvya, Beejamrutha, Jeevamrutha and cow urine have gained significant attention due to their potential to enhance soil fertility, crop productivity, and reduce chemical input dependency. Hence, in order to study the influence of cow based organic nutrient sources on growth and yield a field experiment entitled "Assessing the Potential of Cow-Based Organic Amendments for Improving Summer Mungbean (Vigna radiata) Yield and Sustainability in Rice Fallow" was conducted during summerseason of the year 2022 at experiment farm of College of Post Graduate Studies in Agricultural Sciences (CAU, Imphal). The experiment was laid out in randomized block design with three replications having 8 treatments viz., T1 Control (no inputs), T2 Seed priming with cow urine, T3 FYM 5t ha-1, T4 Seed priming with cow urine+ FYM 5t ha-1, T5 Seed treatment with Beejamrutha, T6 Seed treatment Beejamrutha +Jeevamrutha (15 days interval), T7 FYM@ 2.5t ha-1 + Jeevamrutha spray at (15 days interval), T8 FYM@2.5t ha-1+Beejamrutha + Jeevamrutha (15 Days interval). Experimental findings revealed that the growth parameters such as plant height, leaf area index, dry shoot wt., dry root wt., no. of root nodules, CGR, NAR, recorded highest in treatment T8 and was at par with treatment T7, T6 and T5 but significantly high over T1, T2, T3, T4. Further, treatment T8 which was being at par with T7, T6, T5, reported significantly more grain and biological yield over the treatments T1, T2, T3, T4. The magnitude of yield increases in treatment T8 was 46.2,29.6,25,20.3, 26.8, 20.3, 8.3% high over the treatment T1, T2, T4, T3, T5, T6, T7 respectively.
