biostudies-literatureLiu XNational Key Research and Development Program of China744843https://www.ebi.ac.uk/biostudies/studies/S-EPMC8542884biostudies-literatureUnknown12Chlorine (Cl) is indispensable for the growth of plants. While rarely systematic reports are available for the effect of Cl-containing fertilizers on citrus production. This study aimed to investigate the impacts of various Cl-containing fertilizers on the nutrients in the leaves, the yield and quality of sweet orange, and the Cl migration in the plant-soil-leaching system. A 5-year field experiment (2016-2020) with five Cl treatments (0, 75, 150, 450, and 900 kg ha^-1), and soil core lysimeter test with five Cl levels (0, 150, 225, 300, and 450 kg ha^-1) were carried out. The results showed that 77.0% of Cl leached into above 60 cm deeper soil layer, with calcium as the main accompanying ions, resulting in less Cl being absorbed by the citrus plants. The content of Cl Frontiers in plant scienceMigration of Chlorine in Plant-Soil-Leaching System and Its Effects on the Yield and Fruit Quality of Sweet Orange.PMC85428842019YFD10014002019YFD1000103Liu XLiu YHu CZhu ZTan ZDong ZWu SRiaz MTan QfalseMigration of Chlorine in Plant-Soil-Leaching System and Its Effects on the Yield and Fruit Quality of Sweet Orange.Chlorine (Cl) is indispensable for the growth of plants. While rarely systematic reports are available for the effect of Cl-containing fertilizers on citrus production. This study aimed to investigate the impacts of various Cl-containing fertilizers on the nutrients in the leaves, the yield and quality of sweet orange, and the Cl migration in the plant-soil-leaching system. A 5-year field experiment (2016-2020) with five Cl treatments (0, 75, 150, 450, and 900 kg ha^-1), and soil core lysimeter test with five Cl levels (0, 150, 225, 300, and 450 kg ha^-1) were carried out. The results showed that 77.0% of Cl leached into above 60 cm deeper soil layer, with calcium as the main accompanying ions, resulting in less Cl being absorbed by the citrus plants. The content of Cl 2021-01-01T00:00:00Z20212025-04-04T22:43:11.964Z2025-04-04T22:43:11.964ZS-EPMC85428843470763010.3389/fpls.2021.744843