Effects of Integrated Nutrient Management on Growth, Flowering, and Yield of Tuberose (Agave amica L.) cv. Prajwal

Abstract

The present investigation was carried out during November, 2024 – March, 2025 at the Floriculture Research Centre, Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut (U.P.), to evaluate the effect of integrated nutrient management on tuberose (Agave amica L.) cv. Prajwal. Eleven treatments were tested: T1 = 100% RDF; T2 = 100% RDF + 25% VC + 5 kg Azotobacter; T3 = 75% RDF + 25% VC + 5 kg PSB; T4 = 75% RDF + 25% VC + 5 kg Azotobacter + 5 kg PSB; T5 = 50% RDF + 50% VC + 5 kg Azotobacter; T6 = 50% RDF + 50% VC + 5 kg PSB; T7 = 50% RDF + 50% VC + 5 kg Azotobacter + 5 kg PSB; T8 = 25% RDF + 75% VC + 10 kg Azotobacter; T9 = 25% RDF + 75% VC + 10 kg PSB; T10 = 25% RDF + 75% VC + 10 kg Azotobacter + 10 kg PSB; and T11 = Control. The treatment T10 showed maximum plant height (66.82 cm), spike diameter (1.35 cm), flower weight spike⁻¹ (16.41 g), bulb weight plant⁻¹ (24.34 g), bulb size (6.21 cm), bulbs plant⁻¹ (4.66), rachis length (25.19 cm), florets spike⁻¹ (28.15), and earliest first spike opening (85.97 days). T2 and T9 produced maximum leaf length (47.59 cm) and leaves plant⁻¹ (55.62), while T4 recorded longest spike (69.10 cm), spikes clump⁻¹ (2.44), bulb diameter (2.28 cm), and bulb yield (7.99 t/ha). Minimum days to spike emergence (69.93) occurred in T5. Overall, T10, followed by T4, proved superior for growth and yield, suggesting their potential for sustainable tuberose production with reduced fertilizer use and improved soil health.