The effect of speciation forms of fluorine on the decay of spruce and juniper trees

These studies were undertaken to identify the reasons for decay of spruce and juniper trees growing near the Metalplast plant in Oborniki. The material from the trees growing in this region was analyzed for the presence of free and complex-bound fluorine (FA) and total content of fluorine (FB), as well as some metals known to hae harmful effects on plants. The results were compared with analogous data obtained for plants growing in the area free from this kind of pollution, in Kórnik. The comparison has confirmed the hypothesis claiming that the main reason for decay of trees of the above species growing in the neighbourhood of the Metalplast plant in Oborniki is pollution by fluorine compounds.