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Phosphorus leaching from clay soils can be counteracted by structure liming

Ulen, Barbro and Etana, Ararso (2014). Phosphorus leaching from clay soils can be counteracted by structure liming. Acta agriculturae Scandinavica. Section B, Soil and plant science. 64:5, 425-433
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Official URL: http://dx.doi.org/10.1080/09064710.2014.920043

Abstract

Two field experiments with drained plots on clay soils (60 and 25 % clay) demonstrated a significant reduction in leaching of total phosphorus after application of structure lime. Aggregate stability, was significantly improved. Phosphorus leaching in particulate form was significantly reduced following structure liming at the site with a very high clay content. Sites representing low (50 mg kg-1) and high (140 mg kg-1) levels of phosphorus extractable with acid ammonium lactate in topsoil displayed differing effects on leaching of dissolved reactive phosphorus. This form of phosphorus was only significantly reduced compared with the control at one site with high topsoil phosphorus status and relatively high (17-18%) degree of phosphorus saturation in the subsoil. Laboratory experiments with simulated rain events applied to topsoil lysimeters from the same site also demonstrated a significant reduction in leaching of dissolved reactive phosphorus. These findings indicate that structure liming is an appropriate leaching mitigation measure on soils with both a high clay content and high soil phosphorus status.

Authors/Creators:Ulen, Barbro and Etana, Ararso
Title:Phosphorus leaching from clay soils can be counteracted by structure liming
Series/Journal:Acta agriculturae Scandinavica. Section B, Soil and plant science (0906-4710)
Year of publishing :2014
Volume:64
Number:5
Page range:425-433
Number of Pages:9
Publisher:Taylor & Francis
ISSN:0906-4710
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Accepted version
Full Text Status:Public
Agris subject categories.:P Natural resources > P30 Soil science and management
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 405 Other Agricultural Sciences > Environmental Sciences related to Agriculture and Land-use
Agrovoc terms:leaching, clay soils, liming, soil management
Keywords:aggregate stability, drainage water, mitigation method, nutrients, turbidity
URN:NBN:urn:nbn:se:slu:epsilon-e-2889
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-2889
Additional ID:
Type of IDID
Web of Science (WoS)000339168100006
ID Code:12202
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
Deposited By: SLUpub Connector
Deposited On:02 Sep 2015 09:41
Metadata Last Modified:06 Feb 2016 05:14

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