FLUORIDE CONTENT OF VEGETABLES IRRIGATED WITH WATERS OF HIGH FLUORIDELEVELS

Fluoride content of vegetables which were irrigated with water of an u nusual high F- concentration (at the level of 10 mg/L), was determined by ion selective electrode and the values obtained were compared to t hose from vegetables irrigated with water of a usual F- concentration (at the level of 0.15 mg/L). Additional experiments were performed wit h parsley grown in the glasshouse and irrigated with water doped with F- at three levels (0.13, 10.0 and 15.0 mg/L). The results showed that , in all cases, F-concentration in plant tissue increased as F- levels in the irrigation water was increased. Also, fluoride had the tendenc y to accumulate in the vegetable leaves than in the fruits.