International Journal of Advance Agricultural Research
ISSN: 2053-1265
Vol. 9(3), pp. 42-50, June 2021
doi.org/10.33500/ijaar.2021.09.004



Effect of gypsum for reclamation of tidal land soil using native halophyte plants in South Korea

Jae-Kwon Son1, Jae-Do Song1 and Jae-Young Cho2*

1Department of Rural Construction Engineering, Jeonbuk National University, Jeonju, Republic of Korea.
2Department of Bioenvironmental Chemistry, Jeonbuk National University, Jeonju, Republic of Korea.

*To whom correspondence should be addressed. E-mail: soilcosmos@jbnu.ac.kr.

Received 28 March, 2021; Received in revised form 3 June, 2021; Accepted 7 June, 2021.

Abstract


Keywords:
Desalination, Gypsum, Halophyte, Reclaimed tidal lands.


The objective of this study was to investigate the reclamation effect of 3 halophyte species, Limonium tetragonum, Salicornia europaea L., and Suaeda japonica Makino, with or without gypsum and under greenhouse conditions, on salt removal from saline-sodic soils of the reclaimed tidal lands of the southwest coast of South Korea. Despite cultivation of halophyte plants alone or with gypsum treatment for 2 years, saturated electrical conductivity (ECe) and exchangeable sodium percentage (ESP) values of soils did not reach the reclamation criteria of 4 dS m-1 and 15%, respectively. The soil pre-treated with gypsum enhanced its characteristics by liberating the soil exchange complex Na+ ions, which exited the exchange site due to the gypsum Ca2+ ions. The proposed phytoremediation technique showed fewer salinity and sodicity improvements than the chemical/physical salt removal methods presented in previous studies.

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