Effect of water stress on growth and yield of selected cowpea (Vigna unguiculata L.) varieties
DOI:
https://doi.org/10.59658/jkas.v13i1.5745Keywords:
Water stress , Cowpea , Varieties, Growth, YieldAbstract
The study aimed to evaluate the effect of water stress on the growth and yield of selected cowpea (Vigna unguiculata L.) varieties. The experiment included two factors: the first factor was irrigation levels, The secondry factor was three cowpea varieties. Harvesting was done after the pods reached the drying stage, 90 days after planting. The results were analyzed according to the statistical design used, and comparisons between means were made using the Least Significant Difference. The results showed a significant effect of using different irrigation levels on The characteristics of plant height, number of leaves, leaf area, biological yield, and percentage of protein, where the irrigation level exceeded 100% of the field capacity, giving the highest averages, reached (142.1 cm, 52.8 leaves.plant-1, 2188 cm2, 72.86 g, 14.71 tons.ha-1, 26.062%). Furthermore, the results showed the superiority of the ROTTRDAM variety in the traits of plant height and number of leaves, reaching (155 cm and 50.2 leaves.plant⁻¹, respectively). The Ramshorn variety excelled in the traits of leaf area and biological yield, recording (1924 cm² and 15.62 ton.ha⁻¹, respectively). The Yunanda variety was superior in the traits of 300-seed weight and percentage of protein, reaching (74.47 g and 27.987%, respectively). A significant interaction was observed between the two study factors. The interaction between the 100% irrigation level and the ROTTRDAM variety recorded the highest plant height and number of leaves (171.4 cm and 54.5 leaves.plant⁻¹, respectively). The interaction between the 100% irrigation level and the Ramshorn variety recorded the highest leaf area and biological yield (2679 cm² and 15.92 ton.ha⁻¹, respectively). The interaction between the 100% irrigation level and the Yunanda variety recorded the highest 300-seed weight and percentage of protein (75.82 g and 29.586%, respectively).
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Copyright (c) 2026 Copyright (c) 2024 is the Author's article. Published by the Journal of Kerbala for Agricultural Sciences under a CC BY 4.0 license
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