Influence of Cycocel foliar spray on the growth of oleander plants under salt stress
DOI:
https://doi.org/10.25081/jaa.2025.v11.9589Keywords:
Cycocel application, Oleander cultivars, Growth, Salt stressAbstract
The study examined the effects of foliar growth regulator (Cycocel) at three concentrations (0, 500, and 1000 mg L-1) and three levels of irrigation water salinity (tap water, 6 dS m-1, and 9 dS m-1) on the vegetative growth of two oleander cultivars (white and pink). The findings indicated that the white cultivar outperformed the pink in most vegetative traits. In addition, applying the highest concentration of Cycocel (1000 mg L-1) significantly boosted vegetative parameters. Conversely, irrigation with water at 9 dS m-1 led to a reduction in all measured vegetative traits, such as plant height, leaf count, leaf area, stem diameter and branch number. Notably, the combination of the pink cultivar with 1000 mg L-1 Cycocel improved leaf number and stem diameter, while the treatment pairing 1000 mg L-1 Cycocel with tap water produced the highest branch numbers. Overall, the treatment integrating the pink cultivar, 1000 mg L-1 Cycocel, and tap water achieved the best results with 123.90 leaves per plant, a stem diameter of 15.35 mm, and 7.40 branches per plant compared to the control. In summary, although the white variety excelled in most vegetative traits, the pink cultivar demonstrated enhanced characteristics, and foliar application of Cycocel was effective in boosting all measured parameters.
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