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    Effect of nitrogen and phosphorus on flowering , yield and quality of strawberry cv. Winter Dawn
    (CCSHAU, Hisar, 2021-08) Soni, Jyoti Bai; Godara, A.K
    The present investigation was carried out to study the effect of nitrogen and phosphorus on flowering, yield and quality of strawberry cv. Winter Dawn in the Department of Horticulture, CCS Haryana Agricultural University, Hisar during 2020-21. There were 12 treatment i.e. T1: 40% NO3- + 60% NH4+ + P2O5 200 g, T2: 50% NO3-+ 50% NH4++ P2O5 200 g, T3: 60% NO3- + 40% NH4++ P2O5 200 g, T4: 70% NO3-+ 30% NH4+ + P2O5 200g, T5: 80% NO3- + 20% NH4+ + P2O5 200 g, T6: 90% NO3- + 10% NH4+ + P2O5 200 g, T7: 40% NO3- +60% NH4++ P2O5 300 g, T8: 50% NO3- + 50% NH4+ + P2O5 300 g, T9: 60% NO3- + 40% NH4+ + P2O5 300 g, T10: 70% NO3- + 30% NH4+ + P2O5 300 g, T11: 80% NO3- + 20% NH4+ + P2O5 300 g, T12: 90% NO3- +10% NH4+ + P2O5 300g. Among the different treatments T12 (90%NO3- + 10%NH4++P2O5 300 g) performed best in terms of plant height (18.8 cm), plant spread (32.6 cm), crown diameter(16.4 mm), plant fresh weight (53.9 g) and dry weight (15.6 g), acidity (0.88%) and ascorbic acid content (42.6 mg/100g). Treatment combination T11 (80% NO3- + 20% NH4+ + P2O5 200 g) recorded the maximum TSS (7.3%). Whereas, size of primary flower and fruit length of primary fruit was observed insignificant. T12 (90% NO3- +10% NH4+ + P2O5 300g) performed best in terms of early flowering (72.1 DAP), average number of flower (10.8), number of primary flower (7.3), number of secondary flower (12.1), number of tertiary flower (12.4), total number of flower (31.8), size of secondary flower (30.8mm), size of tertiary flower (22.9 mm), fruit breadth of primary fruit (36.9 mm), early fruiting (98 DAP),total number of fruits per plant (29),weight of primary fruit (17.4 g), weight of secondary fruit (12.7 g),weight of tertiary fruit(6.9 g) and yield per plant (332.5 g).