Enhancing growth, yield, and oil quality of two sunflower cultivars through integrated bio-fertilizers and mineral fertilization levels | ||
| Archives of Agriculture Sciences Journal | ||
| Volume 8, Issue 2, August 2025, Pages 96-112 PDF (783.76 K) | ||
| Document Type: Research article | ||
| DOI: 10.21608/aasj.2025.455428 | ||
| Authors | ||
| M. M. Abd Elsalam; M. M. Ibrahim; Y. A. M. Khlifa* ; A. Y. Mahdy | ||
| Department of Agronomy, Faculty of Agriculture, Al-Azhar University, Assiut, Egypt | ||
| Abstract | ||
| Two experiments were conducted at the research farm Faculty of Agriculture, Al-Azhar University, Assiut, Egypt, during two consecutive summer seasons (2021 and 2022). The experiments aimed to study the maximization of production and quality of two sunflower cultivars (Sakha 53 and Giza 102) using some biofertilizers Azotobacter chrococcum, Bacillus megaterium, Bacillus circulons and control without biofertilization, along with different levels of mineral fertilizers (50, 75, and 100% of the recommended dose of NPK). A split-split plot design was used: three replications, with cultivars allocated in the main plots, while mineral fertilizers allocated in the sub plots, and biofertilizers were distributed in the sub-sub plots, in three replicates. The results showed that Giza 102 plants outperformed Sakha 53 in plant height at harvest, head diameter, 100-seed weight, seed yield (kg/feddan) (feddan = 4200 m² = 0.420 hectares = 1.037 acres), and seed oil content in both seasons. Plant height at harvest, head diameter, head seed number, 100-seed weight, and seed yield (kg/feddan) also increased with a 100% increase in NPK. The highest values were achieved with the 100% addition of mineral fertilizer. However, seed oil content was better with the 75% addition of mineral fertilizer. Increases in plant height at harvest, head diameter, head seed number, 100-seed weight, seed yield (kg/feddan), and seed oil content were also found with the use of biofertilizers, especially Bacillus circulons, in both seasons. | ||
| Keywords | ||
| Sunflower; mineral fertilizers; biofertilizers | ||
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