Study on the effect of nano urea, nano dap and micronutrients on growth and physiological parameters of gerbera (Gerbera jamesonii Bolus Ex. Hooker F.) var. toro rosso under shade net conditions

An investigation was conducted to evaluate the effect of nano urea, nano DAP and micronutrients on growth and physiological parameters of Gerbera (Gerbera jamesonii Bolus Ex. Hooker F.) under shade net conditions at College of Horticulture, Rajendranagar, Hyderabad, Sri Konda Laxman Telangana Horticultural University, during the late winter season of the year 2024-2025. This study involved seven treatments in a Completely Randomized Design with three replications. The results from the study concluded that the treatment T6 75% N + 75% P2O5 +100% K2O + nano urea @ 3 ml/L + Liquid micronutrients @ 2.5 ml/L was superior among all the treatments in terms of growth and physiological parameters includes plant height (16.09, 25.21, 31.13 cm), number of leaves per plant (7.26, 11.14, 14.13), leaf length (22.12, 28.20, 34.06 cm), leaf width (6.96, 12.29, 15.44 cm), plant spread in East to West (39.33, 54.24, 62.17 cm) and North to South direction (44.72, 57.05, 66.47 cm) at 30, 60 and 90 days after planting respectively and the maximum number of suckers per plant (3.13), leaf area (186.42 cm2) and chlorophyll content (spad units) (84.12) at 150 days after planting.