Venkatraj N. and Rajkumar M.
Abstract
An experiment conducted to assess the effect of foliar application of Nano Urea and Nano DAP on growth and yield parameters of grapes variety Muscat Hamburg. This experiment was conducted in Randomized Block Design (RBD) with 16 treatments (T1 (0.2% Nano Urea), T2 (0.3% Nano Urea), T3 (0.4% Nano Urea), T4 (0.2% Nano DAP), T5 (0.3% Nano DAP), T6 (0.4% Nano DAP), T7 (0.2% Nano Urea + 0.2% Nano DAP), T8 (0.2% Nano Urea + 0.3% Nano DAP), T9 (0.2% Nano Urea + 0.4% Nano DAP), T10 (0.3% Nano Urea + 0.2% Nano DAP), T11 (0.3% Nano Urea + 0.3% Nano DAP), T12 (0.3% Nano Urea + 0.4% Nano DAP), T13 (0.4% Nano Urea + 0.2% Nano DAP), T14 (0.4% Nano Urea + 0.3% Nano DAP), T15 (0.4% Nano Urea + 0.4% Nano DAP) & T16 (Recommended dose of NP through soil application)) in two replications and sprayed at vegetative stage and berry development stage. The data revealed that T9 (0.2% Nano Urea + 0.4% Nano DAP) showed the highest values for Growth parameters like leaf length (cm), leaf width (cm), leaf area (cm2), shoot length (cm), petiole base girth (cm), cane girth (cm), specific leaf weight (mg/cm2) and yield parameters like bunch weight (g), number of rachis per bunch, number of berries per rachis, number of berries per bunch, number of bunches per vine and yield per vine (kg). In comparison, T16 (Recommended dose of NPK through soil application) showed the lowest growth and yield parameter values.