KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Effects of Varying Levels of Salinity Stress on the Growth Characteristics of Okra (Abelmoschus esculentus)

  • Abdullah Al Kafi (College of Agricultural Sciences, International University of Business Agriculture and Technology) ;
  • Md. Ashaduzzaman Siddikee (Department of Genetics and Plant Breeding, Sher-e-Bangla Agricultural University) ;
  • Dipeeka Roy (College of Agricultural Sciences, International University of Business Agriculture and Technology) ;
  • Suraiya Sharmin (College of Agricultural Sciences, International University of Business Agriculture and Technology) ;
  • Md. Esrafel (College of Agricultural Sciences, International University of Business Agriculture and Technology) ;
  • Md. Nizam Uddin Sarker (College of Agricultural Sciences, International University of Business Agriculture and Technology) ;
  • Jannatul Ferdousi (Department of Horticulture, Sylhet Agricultural University) ;
  • Swapan Kumar Roy (College of Agricultural Sciences, International University of Business Agriculture and Technology)
  • Received : 2024.12.17
  • Accepted : 2025.03.24
  • Published : 2025.06.01
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Abstract

Salinity stress is a major constraint on agricultural productivity that adversely affects plant growth and development by disrupting physiological and morphological processes. Okra (Abelmoschus esculentus L.), a widely cultivated vegetable crop, is particularly sensitive to high salt concentrations, necessitating the development of effective salt-mitigation strategies. The aim of this study was to evaluate the effects of different salinity levels on the morphological characteristics of okra to provide insights into its tolerance mechanisms. The experiment was conducted at the Central Farm of Sher-e-Bangla Agricultural University, Dhaka, from September to December 2021, using a complete block design with four treatments (T0-control; T1-100 mM NaCl; T2-70 mM NaCl; and T3-40 mM NaCl) and three replications. Okra seedlings (Super Shomy F1) were grown in pots containing 8 kg of soil enriched with cow dung and fertilizers. Salinity treatments were applied 25 days after sowing. The results showed significant reductions in plant growth under higher salinity levels, with plant height decreasing from 90.83 cm (control) to 77.60 cm (100 mM NaCl), and leaf area reducing from 171.40 cm2 (control) to 131.0 cm2 (100 mM NaCl). These findings highlight the detrimental impact of salinity on okra growth and emphasize the urgent need to develop salt-tolerant cultivars and implement soil and water management strategies to mitigate salinity stress in agricultural systems. Taken together, the present study offers valuable insights into the development of salt-tolerant crop varieties and practical strategies for mitigating salinity stress in agricultural systems.

Keywords

Acknowledgement

We would like to thank IUBAT and Sher-e-Bangla Agricultural University for their support. We also thank Editage (www.editage.co.kr) for English language editing services.

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