Mitigating particle and nutrient losses via subsurface agricultural drainage using lightweight aggregates

Jarle T. Bjerkholt, Jens Kværner, Petter D. Jenssen and Tormod Briseid

Agricultural Water Management, 2019, vol. 213, issue C, 1004-1015

Abstract: The awareness of sediment and nutrient loss from non-point sources are of increasing environmental concern as measures to reduce point source inputs to surface waters have been introduced. Mitigation efforts to reduce loss of particles and nutrients from agriculture in Norway and other countries have mainly focused on surface runoff, whereas sub-surface drainage has received little attention. However, research has shown that the sub-surface field drains are transporting both sediment and nutrients rapidly to the watercourses. Despite these established facts there has been little development of measures to reduce these losses. This article describes how Lightweight Aggregates (LWA), Leca®, can mitigate some of the environmental challenges connected to sub-surface field drains.

Keywords: Field drainage; Sediment loss; Phosphorus loss; Non-point source; Preferential flow (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:213:y:2019:i:c:p:1004-1015

DOI: 10.1016/j.agwat.2018.12.022

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