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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 > MTT Agrifood Research
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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