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Potential bioavailability of particulate phosphorus in runoff from arable clayey soils

Uusitalo, Risto (2004) Potential bioavailability of particulate phosphorus in runoff from arable clayey soils. Thesis, MTT Agrifood Research Finland . Agrifood Research Reports, no. 53. .

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Summary

Runoff phosphorus (P) associated with eroded soil contributes to eutrophication to some extent. The present work examines two methods for estimating the potential bioavailability of particulate P (PP) in runoff, and studies the concentrations and losses of different P forms in surface and subsurface runoff from arable soils. The potential bioavailability of PP was approximated by extraction with (i) anion exchange resin (AER-PP), giving a measure of desorbable PP under aerobic conditions, and with (ii) bicarbonate-dithionite (BD-PP), which dissolves redox-labile PP. Both methods were applied in runoff analysis without sediment preconcentration.


EPrint Type:Thesis
Thesis Type:Ph.D. thesis
Keywords:phosphorus, eutrofication, field runoff, bioavailability, environmental risk assessment
Subjects: Environmental aspects > Air and water emissions
Research affiliation: Finland > Luke Natural Resources Institute
Related Links:http://www.mtt.fi/met/pdf/met53.pdf
Deposited By: Koistinen, Riitta
ID Code:11135
Deposited On:13 Aug 2007
Last Modified:12 Apr 2010 07:35
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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