Abstract

During the 2024–2025 winter season, a field experiment was conducted in two locations in the Al-Rashidiya area and the Wana sub-district, in silty loam and sandy loam soils, respectively. To study the effect of Nano NPK fertilizer on the yield of three canola varieties and their content of fatty acids. Three Nano NPK fertilizer treatments (0, 2.5, and 5 g/L) and three canola cultivars (Serw, Raja, and Reandy) were used in the study. The Experiment was done in a split-plot design in compliance with the Randomized   Complete Block Design having 3 replications. The main plots were assigned nano-NPK treatments whereas varieties were the subplots. It was found out that the concentration of the Nano fertilizer (5 g/L) performed remarkably better in seed yield, seed oil content, oil yield, oleic acid, linoleic acid, linolenic acid, palmitic acid, and stearic acid, at the two experimental sites. The Serw variety performed highly in seed yield, seed oil content, oil yield, and palmitic acid and stearic acid at the Wana site, oleic acid and linoleic acid at the Al-Rashidiya site, and linolenic acid, palmitic acid and stearic acid at the Al-Rashidiya site. The interaction between the 5 g/L concentration of Nano fertilizer and the Serw variety outperformed in seed yield at both experiment locations and in oil yield at the Al-Rashidiya location. Results show that nano-NPK fertilizer techniques can be adapted to aquatic plant and algal development systems, even though the experiment was conducted on a terrestrial oilseed crop. Applications of nano-fertilizers have been shown to improve nutrient uptake and fatty acid profiles, potentially leading to new nano-nutrient formulations that enhance oil quality and biomass productivity in aquatic organisms.

Keywords: Yield, Oil, Fatty acids, Nano NPK fertilizer, Canola, Aquatic plant, Algal system