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Ilari Lumme (email), Markku Yli-Halla

Behaviour of certain phosphorus and potassium compounds in a sedge peat soil.

Lumme I., Yli-Halla M. (1987). Behaviour of certain phosphorus and potassium compounds in a sedge peat soil. Silva Fennica vol. 21 no. 3 article id 5317. https://doi.org/10.14214/sf.a15474

Abstract

The solubilityof various phosphorus and potassium compounds in a sedge peat soil was studied in an incubation experiment aimed at screening potential fertilizers for the cultivation of fast-growing willows. (KPO3)n proved not to be a source of the slow-released K regarded as most desirable for this kind of cultivation as it was hydrolysed completely in the soil during incubation. Phosphorus from easily soluble or hydrolysable compounds (superphosphate, KH2PO4, (KPO3)n) was bound in the soil largely by Al and Fe and elevated the level of readily soluble P considerably, whereas rock phosphates were found to be practically unchanged after incubation and did not contribute to the readily soluble P in the soil. Apatites proved to be quite insoluble and are therefore assumed to be unsuitable as P fertilizers for fast-growing willows, which have a high nutrient demand.

The PDF includes an abstract in Finnish.

Keywords
fertilization; nitrogen; peatlands; potassium; willows; Salix; fast-growing willows; slow-released fertilizers

Published in 1987

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Available at https://doi.org/10.14214/sf.a15474 | Download PDF

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