The Application of Fertilizers to Drained Peat 2. Uptake by Vegetation and Residual Distribution in Peat

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Abstract
Analyses of peat cores taken from lysimeters, which had been used to monitor leaching losses from a drained peat on a raised bog for three years, showed that much of the applied fertiliser, rock phosphate and potassium chloride, was retained in the uppermost 0.3 m of the peat. Undisturbed bog vegetation had accumulated 10–13 per cent of the applied P and K and losses to drainage water amounted to about 10 and 35 per cent respectively. When both nutrients were applied together leaching losses were reduced, vegetation uptake was increased and more was retained in the peat. Within the fairly wide 95 per cent confidence limits most of the P and Ca could be accounted for but K showed a deficit. The Ca in the rock phosphate was almost entirely retained in the peat.

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