Effect of Nano Urea, GA3, Boron and Calcium on Vegetative Growth, Fruit Quality, and Profitability of Strawberry (Fragaria × ananassa Duch.) cv. Winter Dawn

Optimizing pre-harvest nutrition and growth regulators is critical for maximizing its growth, yield, and quality. A field experiment was conducted during 2024–25 to evaluate the effects of nano urea, GA3, boron, and calcium on strawberry cv. 'Winter Dawn' under a naturally ventilated polyhouse at Prof.

Rajendra Singh (Rajju Bhaiya) University, Prayagraj, Uttar Pradesh. The study followed a Randomized Block Design (RBD) with seven treatments and three replications.Results revealed significant variations among treatments. Foliar application of T7 [GA3 150 ppm) + Boron (0.6%) + Calcium nitrate (1.0%)] at 25, 50, and 75 days after planting (DAP) recorded the maximum vegetative and yield attributes, including plant height (19.10 cm), plant spread (19.44 cm E–W, 22.16 cm N–S), leaf number (18.60), fruit weight (15.46 g), yield per plant (320.47 g), and the highest benefit–cost ratio (1:2.74).