Impact of Salinity Levels on the Development of Manikpogboa landrace of Okra (Abelmoschus esculentus (L.) Moench) from Abraka, Delta State, Nigeria

This study evaluates the impact of salinity on the growth of Abelmoschus esculentus (okra) cultivated in Abraka, Delta State, Nigeria. Three concentrations of NaCl (90mM, 180mM, and 360mM) were applied to assess their effects on key growth parameters, including plant height, leaf number, leaf area, and stem girth. Using a controlled experimental setup with loamy soil and perforated bags, the treatments were administered over seven weeks. Results showed that increased salinity significantly reduced all measured growth parameters. High concentrations of NaCl led to stunted growth, decreased leaf production, and narrower stem girth, consistent with previous studies linking salinity stress to reduced photosynthesis, ion imbalance, and cellular dehydration. The study highlights the sensitivity of okra plants to salinity stress, particularly at higher NaCl concentrations, emphasizing its impact on yield and physiological traits. These findings provide insights into the tolerance levels of okra under saline conditions, contributing to sustainable agricultural practices in areas affected by salinity. Recommendations include exploring mitigation strategies such as soil amendments and the use of salt-tolerant cultivars to improve okra production in salt-prone regions.