Vol. 12, Issue 5 (2023)

Author(s):
P Hemanth, K Shailaja, KPC Reddy and P Satish

Abstract:
A field experiment was conducted during kharif 2021-2022 at college farm, College of Agriculture, Rajendranagar, Professor Jayashankar Telangana State Agricultural University, Hyderabad in randomized block design with nine treatments and three replications to study the effect of nano nitrogen fertilizer in conjunction with urea on apparent N use efficiency. The highest apparent N use efficiency (1.39) was registered with the application of treatment ¼^th of 100% N as urea each time at 20 and 60 DAS + Nano- N sprays @ 1250 mL ha^-1 each time at 40 and 80 DAS which was on par with ¼^th of 100% N as urea each time at 20 and 40 DAS + Nano- N sprays @ 1250 mL ha^-1 each time at 60 and 80 DAS (1.36), ¼^th of 100% N as urea at 20 DAS + 3 Nano-N sprays @ 1250 mL ha^-1 each time at 40, 60 and 80 DAS (1.27), ¼^th of 100% N as urea at 20 DAS + 3 Nano-N sprays @ 750 mL ha^-1 each time at 40, 60 and 80 DAS (1.24), ¼^th of 100% N as urea each time at 20 and 60 DAS + Nano- N sprays @ 750 mL ha^-1 each time at 40 and 80 DAS (1.04).