In this study, we investigated the availability of phosphorus (P) in forest soils and the P nutritional status of trees in Bavarian forests. Using simple P extraction methods, the correlation between the amount of plant-available P in soil and P nutrition, site productivity, and the tendency to internal cycling of trees was assessed. The topsoil stock of citric acid extractable P proved to be a valid indicator, predicting a substantial part of tree P nutrition. No significant relationship was detected between the quantity of plant-available P in soil and tree internal P cycling (differences between concentration of P in needles of different ages in Norway spruce trees).
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In this study, we investigated the availability of phosphorus (P) in forest soils and the P nutritional status of trees in Bavarian forests. Using simple P extraction methods, the correlation between the amount of plant-available P in soil and P nutrition, site productivity, and the tendency to internal cycling of trees was assessed. The topsoil stock of citric acid extractable P proved to be a valid indicator, predicting a substantial part of tree P nutrition. No significant relationship was de...
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