Dr. Atul GuptaNASAM MIDHUN KUMAR2024-04-102024-04-102024-04-09https://krishikosh.egranth.ac.in/handle/1/5810208256The current research, entitled “Impact of integrated nutrient management on biomass production and carbon stocks of field crops under aonla (Emblica officinalis Gaertn.) based agroforestry system in foot hills of Himachal Pradesh” was conducted at the experimental field of the regional horticulture research and training station (RHRTS) JachhKangra(HP), India during 2021- 2023. The experiment was designed in a Factorial RBD which includes three replications. The study sought to investigate the viability of growing cereals (Wheat and maize) and pluses (lentil and greengram) as an intercrop in anaonla-based agroforestry system and under open circumstances.The experiment included four major treatments of tree trunk distances (D1-0 to 1.5 m, D2-1.5 to 3 m, D3-3 to 4.5 m and D0-open) as well as eight nutrient sub treatments viz., T1 (Control), T2 (RDF), T3 (80% RDF + 20% FYM),T4 (70% RDF + 30% VC),T5 (60% RDF + 40% FYM), T6(60% RDF + 20% FYM + 20% VC),T7 (40% RDF + 30 % FYM + 30%) VC),T8 (100% FYM) were implemented to the crops under investigation. The results demonstrated that aonla tree trunk distances and nutrient sources had a substantial impact on cereals and pulses growth and yield parameters. D0 (open) improved vegetative growth and yield parameters in all four crops. which was on par with D3 and minimum in D1.Among fertilizers combinationsT6 (60% RDF + 20% FYM + 20% VC) produced considerably better yield parameter values in all four crops.The combination of lentil + maize + aonla has the highest carbon storage potential followed by wheat + green gram + aonla.Under tree trunk distances, various soil physico-chemical properties like pH, EC and bulk density were observed maximum in the control plots (D0). viz.SOC, available NPK revealed maximum values under D1.Among fertilizer combinations, pH, EC and bulk density was maximum in treatment T2.However, SOC available N P was maximum in treatment T8. and available K was maximum in treatment T6.The net returns and B:C ratio was greatest for all crops under T6 and T5 accompanied by the aonla tree canopy. As a result, it is determined that the development and production of cereals and pulses under an aonla-based agroforestry system with the adoption of T6 and T5 nutrient supplies at the greatest distance D3 of aonla trees is the most cost-effective combination.EnglishThesis