Effect of foliar spray of Nano urea on yield and economics of rice

Abstract

A field experiment was conducted on “Effect of foliar spray of Nano urea on yield and economics of rice (Oryza sativa L.) at Bihar Agricultural College Farm, Sabour during kharif season of 2022 in randomized block design (RBD) with six treatments and four replications. The results showed that highest number of tillers meter-2, number of panicles meter-2, number of filled grains panicle- 1, 1000-grain weight (g), grain yield (4899 kg ha-1) and straw yield 6094 kg ha-1) was significantly highest under treatment T2- 100% RDN through urea along with 2 foliar sprays of Nano-urea (4ml/L) at AT and PI which was at par with treatment T1- 100% RDN through urea [50% basal + 25% active tillering (AT) + 25% panicle initiation (PI)]. The lowest grain and straw yield (3287 and 4051 kg ha-1) was recorded under control. Economics of different treatments indicated that by higher grain yield, treatment T2- 100% RDN through urea along with 2 foliar sprays of Nano-urea (4ml/L) at AT and PI exhibited maximum B:C ratio.