Universal Journal of Plant Science 9(3): 33-43, 2022 http://www.hrpub.org DOI: 10.13189/ujps.2022.090301 Investigation of the Usage of Limonium gmelinii in Phytoremediation Gül Aras Çinar 1,* , Zeki Alagöz 2 1 Department of Soil Science and Plant Nutrition, Konyaaltı District Directorate of Agriculture and Forestry, Antalya, Turkey 2 Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Akdeniz University, Antalya, Turkey Received July 26, 2022; Revised September 21, 2022; Accepted October 25, 2022 Cite This Paper in the Following Citation Styles (a): [1] Gül Aras Çinar, Zeki Alagöz , "Investigation of the Usage of Limonium gmelinii in Phytoremediation," Universal Journal of Plant Science, Vol. 9, No. 3, pp. 33 - 43, 2022. DOI: 10.13189/ujps.2022.090301. (b): Gül Aras Çinar, Zeki Alagöz (2022). Investigation of the Usage of Limonium gmelinii in Phytoremediation. Universal Journal of Plant Science, 9(3), 33 - 43. DOI: 10.13189/ujps.2022.090301. Copyright©2022 by authors, all rights reserved. Authors agree that this article remains permanently open access under the terms of the Creative Commons Attribution License 4.0 International License Abstract In this study, "Limonium gmelinii", which can be valuable as a halophyte that can be used for the improvement of arid and salty areas and for bringing them into agriculture, was researched. The experiment was carried out as 1 plant x 1 soil x 3 subjects (NaCl, Na 2 SO 4 , B) x 4 doses x 5 replications, in a greenhouse environment. In NaCl and Na 2 SO 4 treatments, Na values increased in the plant compared to the soil, and increased up to 10500 ppm. In NaCl treatments, Cl accumulation was higher in the plant than in the soil, and increased to 33700 ppm. In Na 2 SO 4 treatments, SO 4 values in the plant were higher than in the soil and increased up to 59300 ppm. In the Na 2 SO 4 treatments, there was a noticeable accumulation of salt on the leaves. In B treatments, while there was no significant increase in soil B values, there was an increase in the plant and then a decrease was observed. It is thought that the plant removes and tolerates B toxicity by removing high boron concentration with its salt sacs and salt glands. With the study, it was determined that Limonium gmelinii eliminated the toxicity in the soil by incorporating different doses of these substances applied to the soil. Keywords Limonium gmelinii, Boron Toxicity, Phytoremediation, Halophyte Plant, Salinity 1. Introduction Especially with the problems such as salinity, drought, global warming and climate change that threaten the whole world, it has become more important to use our existing agricultural lands more efficiently, to bring the unused lands to agriculture, to determine the plants that can adapt to such problematic areas and survive. It is very important to disseminate strong plants with high economic value in the cultivation of salty and boron-toxic soils. There are few studies on the use of ornamental plants for these purposes. Phytoremediation studies have also been carried out mostly on heavy metal pollution, and studies on salinity are few. Today, while the need for food is increasing exponentially, the last limit of arable land has been reached, and it has become urgent to rehabilitate polluted and salty lands and bring them into agriculture. It has been stated that approximately 1 billion hectares of land in more than 100 countries around the world are affected by salt. It is estimated that there are more than ten million hectares of areas exposed to salinity annually, of which 3% is agricultural land. About 20% of the irrigable agricultural land has been affected by salinity and agricultural production has decreased significantly [17]. This problem is not only a problem of developing countries but also the problem of countries using advanced technology in agriculture. Pakistan (3.2 million ha), India (20 million ha), China (7 million ha) and the United States (5.2 million ha) constitute approximately 35 million ha of the total irrigable agricultural land (60 million ha) affected by salinity. Approximately 25 million hectares of irrigated areas affected by salinization are located in Afghanistan, Egypt, Iraq, Kazakhstan, Turkmenistan, Mexico, Syria and Turkey. Considering the situation in Turkey, it has been reported that there is a salinity problem or threat in approximately 4 million hectares of land. Considering the usage patterns of the lands in Turkey, it is known that there