The present study entitled “Effect of nano urea and fruit thinning on quality of muskmelon (Cucumis melo L.)” was carried out at Polytechnic in Horticulture, ASPEE College of Horticulture, Navsari Agricultural University, Paria, Valsad, Gujarat (India) during the summer seasons of 2023 and 2024. The experiment was laid out in Randomized Completely Block Design with factorial concept (FRBD), which included sixteen treatment combinations comprising two factors i.e. Nano Urea treatments namely, N₀: No spray, N₁: 2 ml L^-1, N₂: 4 ml L^-1, N₃: 6 ml L^-1 and fruit thinning treatments i.e. F₀: No thinning, F₁: Maintaining three fruits per vine, F₂: Maintaining four fruits per vine and F₃: Maintaining five fruits per vine. All the sixteen treatment combinations repeated thrice.

The result revealed that significantly the maximum TSS (13.09 °Brix), total sugar (12.60%) and fruit firmness (12.31 kg cm^-2) was noted in N₁ treatment (Nano Urea spray @ 2 ml L^-1).