Dr C L SharmaREWA DHIMAN2024-03-192024-03-192023-11-07https://krishikosh.egranth.ac.in/handle/1/5810207579The present investigation entitled, “Studies on the effect of foliar application of urea and nano urea on growth and quality of apple nursery cv. Red Velox” was carried in the Pandah Farm, Department of Seed Science and Technology, Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan HP during 2022-23. The experiment was laid in Randomised Complete Block Design (RCBD), comprising 7 treatments viz, T1: Urea @ 0.3%, T2: Urea @ 0.4%, T3: Urea @0.5%, T4: Nano urea @ 0.3%, T5: Nano urea @ 0.4%, T6: Nano urea @ 0.5%, T7: Control. Each treatment was replicated thrice. Three foliar applications of urea and nano urea were given at weekly interval in the month of July. Nano urea @ 0.4 % (T5) significantly resulted in maximum plant height (183.21 cm), stem diameter (15.70 mm), number of branches (3.00) per plant, number of leaves (62.07) per plant, leaf area (33.51 cm2), leaf chlorophyll content (2.76 mg g-1), leaf N (2.43%) and K (1.63%) content, fresh weight of shoots (246.30 g), dry weight of shoots (116.56 g), number of roots (23.00) per plant, total root length (5.47 m), fresh weight of roots (38.23 g), dry weight of roots (22.13 g), biomass of plant (138.69 g). From the present studies, it can be concluded that Nano urea @ 0.4 % (T5) significantly enhanced the growth and quality of apple nursery cv. Red Velox.EnglishThesis