Impact of Planting Methods and Foliar Zinc Oxide Nanoparticles on Sunflower Growth and Oil Fatty Acid Composition | ||
| Aswan Journal of Agricultural and Biological Sciences | ||
| Volume 1, Issue 2, October 2025 | ||
| Document Type: Research article | ||
| DOI: 10.21608/ajabs.2025.398548.1006 | ||
| Authors | ||
| Hosny Abdelraouf Ali Hamed* 1; Bahy Raghib Bakheit2; El-Saadi Abdel-Hamid Ali3; Abdelmoniem Awadalla Omer1 | ||
| 1Agronomy Department, Faculty of Agriculture and Natural Resources, Aswan University, Egypt. | ||
| 2Agronomy Department, Agriculture Faculty, Assiut University, Egypt. | ||
| 3Agronomy Department, Agriculture Faculty, Assiut University, Egypt | ||
| Abstract | ||
| This study was conducted over two successive summer seasons (2020 and 2021), at the Agronomy Experimental Farm, Faculty of Agriculture, Assiut University, Egypt. The objective was to evaluate the effects of different planting methods and foliar applications of zinc oxide nanoparticles on key physiological traits of the sunflower cultivar Giza 102. A randomized complete block design (RCBD) arranged in a strip plot format with three replications was used. Planting methods— beds, ridges, and flat drills—were assigned to vertical strips, while zinc oxide nanoparticle concentrations (0, 50, 100, 150, 200, and 250 ppm) were assigned to the horizontal strips. The results indicated that both planting methods nanoparticle concentrations, and their interaction, significantly or highly significantly affected most of the measured traits. These indicated leaf area index (LAI), leaf area duration, total chlorophyll content, net assimilation rate, crop growth rate, and relative growth rate. The highest net assimilation rates, 51.89 and 37.03 g/m²/week in the first and second seasons, respectively, were recorded when sunflower was grown on ridges or beds and treated with 150 ppm zinc oxide nanoparticles topically. Moreover, this treatment improved oil quality by increasing the content of unsaturated fatty acids, particularly oleic and linoleic acids. | ||
| Keywords | ||
| Planting Methods; Zinc; Physiological | ||
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