A field experiment was conducted to evaluate the “Response of urea and nano urea on growth and yield of transplanted rice (
Oryza sativa L.) in hill region of Chhattisgarh” during the
Kharif season of 2024. The study was carried out at the Raj Mohini Devi College of Agriculture and Research Station, Ambikapur, Chhattisgarh. The soil of the experimental site was alluvial in origin, characterized as slightly acidic in reaction, and primarily formed by the deposition of calcium-rich sediments over time. The experiment was laid out in Randomized Block Design with 3 replications and 8 treatments
viz., T
1- RDF (120:60:40 kg ha
-1) 3 split N application, T
2- 75% RDN (3 split N application), T
3- 50% RDN (3 split N application), T
4- 75% RDN+1 Nano Urea application at 25-30 DAT, T
5- 75% RDN+2 Nano Urea application at 25-30 DAT & 40-45 DAT, T
6- 50% RDN+1 Nano Urea application at 25-30 DAT, T
7- 50% RDN+2 Nano Urea application at 25-30 DAT & 40-45 DAT and T
8- Control. The rice variety Vikram-TCR was transplanted as test crop on 28 August 2024 and harvesting was done on 03 December 2024.
From the results, it became apparent that the treatment T5 (75% RDN+2 Nano Urea application at 25-30 DAT & 40-45 DAT) recorded a significant mushroom in growth parameters viz., number of tillers, plant height, dry matter accumulation, crop growth rate and relative growth rate; and yield attributes viz., Number of panicles hill-1, Number of grains panicle-1, 1000-seed weight, Seed yield (5020 kg ha-1) and Harvest index (47.13%) is also significant increase in T5 as compared to other treatments but straw yield (5800 kg ha-1) is recorded the highest in T1- [RDF (120:60:40 kg ha-1) 3 split N application] as compared to others. Furthermore, the economic analysis unveiled that the highest B: C of 2.35 also recorded in treatment T5 (75% RDN+2 Nano Urea application at 25-30 DAT & 40-45 DAT) followed by treatment T7 (50% RDN+2 Nano Urea application at 25-30 DAT & 40-45 DAT) with B: C ratio of 2.08. Hence, it can be concluded that 2 Nano Urea application at 25-30 DAT & 40-45 DAT with 75% of RDN from urea can enhance per unit production of transplanted rice.
