Effect of foliar spray of nano urea on growth parameters, quality attributes and yield of linseed

Abstract

A field experiment was conducted during rabi season of 2021-2022 to study the effect of different doses and application methods of nitrogenous fertilizer on growth and quality parameter, economics and yield of linseed. The experiment was laid out in Split plot Design with main plot treatments consisting of soil application of 100% (N1), 75% (N2), 50% (N3) and 25% (N4) N in two splits 50% as basal application and 50% as top dressing and subplot treatments consisting of foliar application of different doses of nitrogenous fertilizers as follows, F1 – Water spray, F2 – One spray of nano-urea @ 3 ml/lit at flower initiation stage, F3 – Two sprays of nano-urea @ 3 ml/lit at flower initiation and capsule development stage, F4 – One spray of 2% Urea at flower initiation stage and F5 – Two sprays of 2% Urea at flower initiation and capsule development stage as foliar application. Soil application of 100% N (N1) and supplemental nitrogen management with foliar application of two sprays of nano-urea @ 3 ml/lit at flowering stage and capsule developmental stage (F3) was found to record significantly highest seed and straw yield, BC ratio, plant height, dry matter accumulation, Oil yield compared to the rest of the treatments.

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