Effect of Urea and foliar application of Nano Urea on growth and yield of different varieties offodder oat (AvenasativaL.) under north western Punjab condition

A field experiment was performed in the Rabi season, 2021-2022 at the agricultural fields of Lovely Professional University, Phagwara, and Punjab. In split-plot design, the experiment has been replicated three times and, with six treatment combinations. The treatment combination includes six urea and nano urea (nitrogen) levels, 0, 100% urea, 75% urea and @4 ml nano urea spray, 75% urea and @2 ml nano urea spray, 50% urea and @4 ml nano urea spray and 50% urea and 2 ml nano urea spray and two oat varieties ( kent and hybrid). The kent variety has maximum plantheight at the time of 60 days of sowing is T2 (100% RDF) (95.4 cm) and minimumhybrid variety plant height is T1 (control) (34.8 cm) at the same period of time. Themaximum no. of leaves/plant in kent variety T2 (28) and lowest leaf/plant in hybridvariety T1 (18), leaf area is more in kent variety T2 (97.92 cm 2 ) and lowest in hybrid T1(44.37cm 2 ), after harvesting the maximum green fodder yield in kent variety T2 (29.38t/ha) and dry fodder yield (6.39 t/ha) and the lowest green and dry fodder yield inhybrid T1 (18.31 t/ha) and (2.97t/ha) respectively.