Vol. 12, Issue 5 (2023)

A field experiment was carried out in research farm, IGKV, Raipur, Chhattisgarh, India during the kharif season of 2020 and 2021 to study the effect of nano nitrogen on the growth and production of rice. It was laid down in a randomized block design (RBD) consisting twelve treatments and three replications. The different treatment combinations were T₁ – 0% N (control), T₂ - 50% RDN, T₃ – 75% RDN, T₄ – 100% NPK (RDF - 120:60:40 kg ha^-1), T₅ – 0% N + 2 sprays of nano N @ 4 ml l^-1, T₆ – 0% N + 2 sprays of nano N @ 8 ml l^-1, T₇ – 50% N + 2 sprays of nano N @ 4 ml l^-1, T₈ – 50% N + 2 sprays of nano N @ 8 ml l^-1, T₉ – 75% N + 2 sprays of nano N @ 4 ml l^-1, T₁₀ – 75% N + 2 sprays of nano N @ 8 ml l^-1, T₁₁ – 50% N + 2 sprays of 2% urea and T₁₂ – 50% N + 3 sprays of 2% urea. The results proved that the combined application of conventional and nano nitrogen had a positive influence on most of the growth parameters. The treatments with 100% RDF (T₄), 75% N + 2 sprays of nano N @ 8 and 4 ml l^-1 (T₁₀ and T₉), 50% N + 2 sprays of nano N @ 8 and 4 ml l^-1 (T₈ and T₇) and 50% N + 3 sprays of 2% urea (T₁₂) obtained significantly higher grain yield over the others in both the seasons. Also, the higher B:C ratio was obtained by the application of nano N combined with 50 and 75% RDN and 100% RDF.