Vol. 9, Special Issue 12, Part F (2025)

The present experiment entitled “Influence of Nitrogen and Phosphorus Levels on the Growth Attributes of Coriander in Inceptisol of Raigarh District, Chhattisgarh” was conducted during rabi season in year 2021-22 and 2022-23 at the Krishi Vigyan Kendra (KVK), Raigarh under the administrative jurisdiction of Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.). The experiment was laid out in FRBD (Factorial Randomized Block Design) with 16 treatments and three replications. Factor A: Nitrogen levels has 4 treatments and Factor B: Phosphorus levels has 4 treatments. The treatment consists of N₁ (0 kg N ha^-1), N₂ (30 kg N ha^-1), N₃ (60 kg N ha^-1), N₄ (90 kg N ha^-1) at Factor A: Nitrogen levels and P₁ (0 kg P ha^-1), P₂ (30 kg P ha^-1), P₃ (60 kg P ha^-1), P₄ (90 kg P ha^-1) at Factor B: Phosphorus levels. The study revealed that nitrogen and phosphorus levels influenced coriander growth differently. The highest plant population was observed with treatment N₄ (90 kg N ha⁻¹) and P₄ (90 kg P ha⁻¹), while the lowest was recorded under the control treatments N₁ (0 kg N ha⁻¹) and P₁ (0 kg P ha⁻¹). Plant height increased significantly with nitrogen up to N₂ (30 kg N ha⁻¹) and phosphorus up to P₃ (60 kg P ha⁻¹), beyond which no significant rise occurred. The maximum number of branches per plant was recorded in N₄ (90 kg N ha⁻¹) and P₄ (90 kg P ha⁻¹), while the minimum was under N₁ and P₁. Days to 50% flowering and maturity were longest in N₄ (90 kg N ha⁻¹) and shortest in N₁ (0 kg N ha⁻¹), whereas phosphorus showed the opposite trend—earliest flowering and maturity under P₄ (90 kg P ha⁻¹) and latest under P₁ (0 kg P ha⁻¹). Overall, the findings indicate that balanced nitrogen and phosphorus application enhances the growth and phenological performance of coriander under Inceptisol conditions of Raigarh.