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Publication Date

1977

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Lysimeter experiments were laid out for study­ing the leaching of nitrogen, calcium, po­tassium, and phosphorus from different hy­dromorphic soils. Most of the hydromorphic soils, above all those of low-bog sites, have to be considered as instable open systems from the very be­ginning of their cultivation. Matter removal well exceeds the amount of matter introduced into these soils. The degree of nutrient leaching in most cases is clearly dependent on the soil humus status. Attention is drawn to the in­tensive calcium leaching and the low level of nitrogen removal as compared with an­pydromorphic soils. The level of potassium leaching is closely correlated with soil texture. Potassium losses were found to be highest in low-bog soils. Losses are at a minimum in hydromorphic soils of loamy-clayey texture. Phosphorus is leached in small quantities only.

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Nutrient leaching in hydromorphic grassland soils as established in lysimeters

Lysimeter experiments were laid out for study­ing the leaching of nitrogen, calcium, po­tassium, and phosphorus from different hy­dromorphic soils. Most of the hydromorphic soils, above all those of low-bog sites, have to be considered as instable open systems from the very be­ginning of their cultivation. Matter removal well exceeds the amount of matter introduced into these soils. The degree of nutrient leaching in most cases is clearly dependent on the soil humus status. Attention is drawn to the in­tensive calcium leaching and the low level of nitrogen removal as compared with an­pydromorphic soils. The level of potassium leaching is closely correlated with soil texture. Potassium losses were found to be highest in low-bog soils. Losses are at a minimum in hydromorphic soils of loamy-clayey texture. Phosphorus is leached in small quantities only.