Study on Okra (Abelmoschus esculentus L.) Response to Salt Stress Environment under Kabul Climatic Conditions, Afghanistan

Year 2021, Volume: 7 Issue: 2, 295 - 303, 30.06.2021

Abdul Walid Salik , Zafer Coşkun , Mohammad Zaman Amini

https://doi.org/10.28979/jarnas.854493

Abstract

Abstract − The research was conducted to examine the effects of saline-irrigation water on growth and fresh pod weight of okra (Abelmoschus esculentus L.) under climatic conditions of Kabul province, Af-ghanistan. This study consisted of four treatments having different salinity levels of irrigation water, (T1:0.0mM, T2:5mM, T3:10mM, and T4:20mM), which were applied throughout the growing season of okra in plastic pots with a randomized complete block design. Results showed that saline irrigation water caused a significant reduction in germination of seeds (in T1:98% germination, T4: 53% germination), leaf length (in T1:9.17 cm, T4:6.8cm leaf length), shoot height (in T1:15.43cm, T4: 13.87cm Shoot height) and root length (in T1:15.37cm, T4:8.7cm root length). Okra plants grown under salt stress conditions showed a significantly decline in yield as compared to control treatment. While 6904kg/ha yield was obtained in control treatment (T1), 6696kg/ha, 4772kg/ha, 3100kg/ha yield were obtained in T2, T3 and T4 applications, respectively. Water use efficiency was maximum in the control treatment and minimum in treatment level 20mM. A maximum value of 13.08kg/ha/mm was computed for control treatment and minimum value of 5.87kg/ha/mm for treatment level 20mM, the water use efficiency value for treatment level 5mM and 10mM were 12.68kg/ha/mm and 9.04kg/ha/mm respectively. As a result, okra growth parameters were decreased significantly with the increasing concentration of ECiw (electrical conductivity of irrigation water). Salinity adversely affected morphological and physiological characteristics of okra.

Keywords

ECiw,, okra growth,, okra fresh pod weight,

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