Journal of Experimental Agriculture International

The experiment was conducted in both field and lab conditions to study the Effect of Particle Size and Concentration of ZnO Nanoparticles on Growth, Yield and Seedling Parameters in Buckwheat (Fagopyrum esculentum L.) Under  Late Sowing Conditions in Eastern Uttar Pradesh Region the lab experiment was performed in CRD with four different size ranges of zinc oxide Nanoparticles (20-30nm, 40-50nm, 60-80nm, 80-100nm) each of three concentrations (30PPM, 60PPM, 80PPM). The field experiment was performed during Rabi season of 2022-2023 in Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj Uttar Pradesh with a control was laid out in factorial RBD with 3 Replications. The results revealed that T1(20-30nm, 30PPM for 8hrs) shows greater Performance among parameters viz Plant height 30 DAS (23.45), Plant height 80 DAS (91.36), Days to first flowering (26.11), Number of Branches (4.43), Seeds per Plant (142.39), Seed yield per plot (11.87), Seed yield per hectare (1.19), Economic Yield (11.87), Biological Yield (32.76). and Harvest Index (36.23) and T3(20-30nm, 80PPM for 8hrs) exhibit greater in Leaf surface area (22.37), Test Weight (27.34). The lab results revealed the treatment T1(20-30nm, 30PPM for 8hrs) showing greater  performance in Germination Percentage (95.63), Root Length (14.57), Seedling Length (24.76), Vigor Index-1 (2369.25), Electric conductivity (0.327), Protein content (13.59), Seed metabolic efficiency and T3 (20-30nm, 80PPM for 8hrs) shows greater Performance in Shoot length (11.57), Fresh Weight (2.19), Dry Weight (0.80), Vigor Index-2 (72.67), Seed Density (0.8), Chlorophyll Content (2.84), Dehydrogenize Activity (0.996).