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Interaction of Wheat Cultivars and Potassium Foliar Application in Enhancing Growth Traits and Grain Yield | ||
| IRAQI JOURNAL OF DESERT STUDIES | ||
| Volume 15, Issue 2, December 2025, Pages 22-28 PDF (627.23 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.36531/ijds.2025.165401.1106 | ||
| Authors | ||
| Lamia hamrouni* ; Nihad Mohammed Prof | ||
| INRGREF-IRESA-Université de Carthage | ||
| Abstract | ||
| The study was conducted at the Desert Studies Center Research Station during the 2024–2025 winter season to investigate the response of four bread wheat cultivars to foliar application of potassium fertilizer. A split-plot arrangement within a randomized complete block design with three replications was used. Potassium concentrations were allocated to the main plots at levels of 0, 2000, and 4000 mg L⁻¹, while the subplots included the cultivars IPA 99, Bohouth 22, Al-Rasheed, and Abu Ghraib 3. The results indicated that the cultivar IPA 99 outperformed others in flag leaf area with 40.15 cm², number of spikes per square meter with 442 spikes m⁻², and number of grains per spike with 62.18 grains spike⁻¹. In contrast, the cultivar Bohouth 22 recorded the highest grain yield at 7.16 tons ha⁻¹. Plants treated with 4000 mg L⁻¹ potassium showed the highest mean values in plant height (101.6 cm), flag leaf area (39.14 cm²), number of spikes per square meter (478.6 spikes m⁻²), number of grains per spike (62.20 grains spike⁻¹), 1000-grain weight (44.50 g), and grain yield (6.64 tons ha⁻¹). A significant interaction was observed between the IPA 99 cultivar and the 4000 mg L⁻¹ potassium concentration, resulting in the highest flag leaf area of 42.05 cm² and 1000-grain weight of 45.60 g. Additionally, a significant interaction occurred between the Bohouth 22 cultivar and the 4000 mg L⁻¹ potassium concentration in grain yield, which reached 7.95 tons ha⁻¹. | ||
| Keywords | ||
| Cultivars; Potassium; Grain Yield; Physiological Traits | ||
| References | ||
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