Geethani Amarawansha (M.Sc. Student)

Thesis Title:

Investigating phosphorus release from waterlogged soils in Manitoba to facilitate design standards and operational protocols for drainage systems

Project Description:

The broad objective of the research is to provide another beneficial management practice tool to reduce P mobilization from agricultural land through improving our knowledge of the consequences of water logging on P release to surface water for designing and operating surface and subsurface drainage systems for different soil types under Manitoba conditions

Specific objectives are to:

  1. Quantify and compare P release to surface water with flooding and development of anoxic conditions in manure amended and un-amended soils having different physical and chemical properties
  2. Relate P release rates and quantities to soil properties and identify soil properties influencing enhanced P release under waterlogged, anoxic conditions
  3. Monitor changes in P sorption ability of manure amended and unamended soils before and after flooding and identify factors affecting P sorption in each soil


Dr. Don Flaten and Dr. Darshani Kumaragamage (University of Winnipeg)

Expected Date of Completion:

Summer 2013

Previous Degrees:

M.Sc. Environmental Soil Science, University of Peradeniya, Sri Lanka (2010)
B.Sc. Agricultural Management and Technology (Honours), University of Peradeniya, Sri Lanka (2009)