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Research article - Peer-reviewed, 2013

Influence of soil phosphorus and manure on phosphorus leaching in Swedish topsoils

Svanbäck, Annika; Ulen, Barbro; Etana, Ararso; Bergström, Lars; Kleinman, Peter; Mattsson, Lennart

Abstract

In Sweden, subsurface transport of phosphorus (P) from agricultural soils represents the primary pathway of concern for surface water quality. However, there are mixed findings linking P in leachate with soil P and limited understanding of the interactive effects of applied P sources and soil test P on P leaching potential. Identifying soils that are susceptible to P leaching when manure is applied is critical to management strategies that reduce P loadings to water bodies. Intact soil columns (20 cm deep) from five long-term fertilization trials across Sweden were used in leaching experiments with simulated rainfall to explore the interactive effects of dairy cow (Bos taurus L.) manure application, soil test P and cropping system. Strong relationships were observed between ammonium-lactate extractable P in soil and dissolved reactive P (DRP) concentrations in leachate, although regression slopes varied across soils. For three soils, application of manure (equal to 21-30 kg P ha-1) to the soil columns significantly increased DRP leaching losses. The increase in DRP concentration was correlated to soil test P, but with wide variations between the three soils. For two soils leachate P concentrations after manure addition were independent of soil P status. Despite variable trends in P leaching across the different soils, P concentrations in leachate were always moderate from soils at fertilization rates equivalent to P removal with harvest. Results clearly stress the importance of long-term P balance to limit P leaching losses from Swedish agricultural soils.

Keywords

phosphorus leaching; ammonium lactate-extractable P; rainfall simulation; long-term fertility experiements; manure management

Published in

Nutrient cycling in agroecosystems
2013, volume: 96, number: 2-3, pages: 133-147
Publisher: Springer

Authors' information

Svanbäck, Annika
Swedish University of Agricultural Sciences, Department of Soil and Environment
Ulen, Barbro
Swedish University of Agricultural Sciences, Department of Soil and Environment
Swedish University of Agricultural Sciences, Department of Soil and Environment
Swedish University of Agricultural Sciences, Department of Soil and Environment
Kleinman, Peter
Mattsson, Lennart
Swedish University of Agricultural Sciences, Department of Soil and Environment

Sustainable Development Goals

SDG6 Clean water

UKÄ Subject classification

Agricultural Science

Publication Identifiers

DOI: https://doi.org/10.1007/s10705-013-9582-9

URI (permanent link to this page)

https://res.slu.se/id/publ/52960