VALUE Course 2010

Environmental chemistry of phosphorus – linkage between watershed and recipient water

Contact learning
period on 8.-10. March 2011 
Viikki campus, University of Helsinki, Auditorium D, Latokartanonkaari  11, Helsinki

Tuesday 8.3. 2011 

Soil chemistry of phosphorus
Prof. Helinä Hartikainen

10.00 – 12.00
short break

Instructions and practical issues

Soil chemistry of phosphorus

  • Reaction components in soils: origin and chemical properties
  • Specific and non-specific retention of anions
  • P reserves in soil and their bioavailability

Feedback of the home work will be discussed 

12.00 - 12.45 Lunch

12.45 -  17.00
Tea/coffee break

 Dynamics of phosphorus exchange between solid and solution phase

  • Physico-chemical  factors controlling the P loading risk
  • Desorption-sorption  isotherms
  • Rationale for selection of analytical methods

Wednesday 9.3. 2011 

Drainage and runoff generation in areas producing phosphorous load
Prof. Harri Koivusalo

short breaks

Drainage and runoff generation in areas producing phosphorous load

  • Hydraulic properties of soil: hydraulic head, water retention characteristics, Darcy´s law
  • Runoff generation mechanisms: hillslope hydrology, infiltration excess overland flow, saturation excess overland flow
  • Drainage designs and impacts on runoff generation: open ditch drainage, subsurface drainage, Hooghoudt’s drainage equation
  • Results from hydrological studies

12.00 -12.45


The phosphorus transfer continuum - processes and options to control agricultural phosphorus lossesy
Principal Research Scientist Risto Uusitalo

12.45 – 16.00
short break

Options to decrease P losses to water along the P transfer continuum

  • The source component:
    • P-cycling in Finnish agriculture and different regions
    • trends in P-fertilization, soil test P and the risk for P losses to water
    • the need for P in contemporary plant production and P application strategies
  • Immobilization options
  • Interception options during transport


Get-together buffer at the Restaurant Viikin Kartano (unfortunately there is no English pages for the restaurant)

Thursday 10.3. 2011 

Sustainable soil use and management options
Prof. Laura Alakukku

9.00 – 12.30
short break

Erosion control – process-based options

  • Aggregate stability and water infiltration into soil
  • Soil porosity, water ‘routes’ in soil
  • Soil tillage, crop cover and other agronomical measures to control erosion

Environmentally sound use of manure – new technologies

12.30 – 13.30
Lunch (and “Soil profile – gallery walking” )

Phosphorus dynamics in peat soils and the effects of forestry operations
Senior Researcher Mika Nieminen

13.30 – 16.00

Phosphorus dynamics in peat soils and the effects of forestry operations

  • Peat soils and their occurrence
  • Phosphorus and its cycling in different peat soils
    • Methodological tools to study P questions 
  • Options to reduce  P loading from peat and forest  soils

More information: Coordinator Riitta Kamula, Tel. +358 8 553 3566, riitta.kamula at oulu.fi