https://doi.org/10.37229/fsa.fjas.2025.11.05

This study investigated the effects of foliar-applied nano- and traditional fertilizers of macro- and micronutrients on the vegetative growth and chemical composition of Superior grapevines over two seasons of 2023 and 2024. Thirteen treatments which was conducted using a Randomized Complete Block Design (RCBD) with 3 replicates, including nano-formulations of N, P, K, Fe, Zn, and Mn, were compared with traditional fertilization and control. Nano-fertilization significantly enhanced shoot length, leaf number, leaf area, pruning wood weight, and cane thickness, with nano-nitrogen (10 g N/vine/year) and nano-iron (5 ppm/vine / year) showing the most pronounced improvements in vegetative parameters and chlorophyll content. Nano-fertilizers promoted higher nutrient use efficiency, and resulted in greater nutrient accumulation in grapevine leaves compared to traditional methods. The findings support integrating nano-fertilization in viticulture for efficient nutrient use, improved plant performance, and enhanced fruit quality, recommending foliar nano-N and nano-Fe application for superior vegetative and reproductive traits in Superior grapevines under the same condition.