Vol. 9, Special Issue 11, Part Q (2025)

Nanotechnology is a cutting-edge science used to improve productivity of crops and efficiently regulate delivery of nutrients to plants and targeted sites to increase nutrient use efficiency over traditional fertilizer. Therefore, to evaluate the effect of Nano DAP on wheat growth parameters and yield attributes a field experiment was conducted in research farm, IGKV, Raipur, Chhattisgarh, India during rabi seasons of 2021-22 and 2022-23. This experiment was laid out with 12 treatments and 3 replications of wheat in randomized block design. The results revealed that in treatments (T₂) 100% NP through DAP (NPK as RDF @ N₁₂₀: P₆₀: K₄₀ and (T₈) 75% NP through DAP + ST (Seed Treatment) with N-DAP @ 5 ml/kg seed + FS (Foliar Spray) with Nano DAP @ 0.2% at 25-30 DAG (Days After Growing) obtained significantly higher plant height at harvest 86.90 cm and 87.48 cm in 2021-22 and 85.75 cm and 85.39 cm in 2022-23 respectively compared to control plot (72.24 cm in 2021-22 and 70. 50 cm in 2022-23). Ear heads per meter square in both years showed highest value in treatment (T₂) which was at par with T₈ (291.00, 290.00 respectively). No significant difference was observed among treatments during both seasons for spike length, spike weight and test weight. The results revealed that 25% of conventional DAP fertilizer can be saved by application through combination of nano DAP fertilizer with DAP in wheat and long-term application of Nano DAP can improve soil health.