Fluorine concentration in cultivated soil in Japan

2015 Fiscal Year Final Research Report

• Project/Area Number: 25660280
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Environmental agriculture(including landscape science)
• Research Institution: Kagoshima University
• Principal Investigator: AKAGI Isao 鹿児島大学, 農水産獣医学域農学系, 助教 (40500004)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: フッ素 / 土壌蓄積 / 農耕地土壌

Outline of Final Research Achievements

We analyzed the fluorine concentration in cultivated soils sampled farms, and investigated the possibility of fluorine accumulation in these soils. The total fluorine concentration in cultivated soils ranged from 135-363 mg/kg (upland field, Andosol), 43.4-300 mg/kg (upland field, Red-yellow soils), 125-293 mg/kg (paddy field) and 163-471 mg/kg (greenhouse field), respectively. About 72% of all the cultivated soils had a higher total fluorine concentration than the neighboring non-cultivated soils. A positive correlation was observed between the total fluorine and total phosphate concentrations in these soils, which indicates that the fluorine in cultivated soils is derived from phosphate fertilizers.

Free Research Field

土壌肥料学，環境農学