Effect of Nano Urea on Yield Attributes Characteristics in Transplanted Rice (Oryza sativa L.)

Abstract

A field experiment was conducted at the Students Instructional Farm, Department of Agronomy, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur (U.P.) during the two consecutive kharif seasons of 2023 and 2024 to evaluate. The experiment was laid-out in a Randomized Block Design with 3 replications and 9 treatments. i.e. T1: 125% RDN through Urea (50% as basal + 25% at active tillering stage and panicle initiation), T2: T1+ Two spray of Nano Urea at active tillering stage and panicle initiation, T3: 100% RDN through Urea in three splits (50% as basal + 25% at active tillering stage and panicle initiation stage), T4: T3 + Two spray of nano urea at active tillering stage and panicle initiation stage (@ 4 ml/ litre of water, T5: 75% RDN through urea (50% as basal + 25% active tillering stage and panicle initiation stage), T6: T5 + Two spray on nano urea at active tillering stage and panicle initiation stage, T7: 50% RDN through urea (50% basal + 25% at active tillering stage and panicle initiation stage), T8: T7+ Two spray of nano urea at active tillering stage and panicle initiation stage, T9: Control. Rice variety Sarju-52 was sown. Recorded yield attributes and yield parameters showed that maximum number of panicles (m-2), total number of tillers (m-2), length of panicle (cm), number of productive tillers (m-2), test weight (1000 grains) (g.), total number of grains panicles-1, number of filled grains panicles-1, grain yield (q ha-1), straw yield (q ha-1), biological yield (q ha-1), harvest index (%)  were achieved under treatment T2: T1+ Two spray of nano urea at active tillering stage and panicle initiation.