393 Phosphorus Fate In Long-Term Fertilized/Manured Soils

Oral Session
S11 Soils & Environmental Quality Phosphorus (P) from livestock manure and inorganic fertilizer can react with soil components following two distinct patterns, an initial rapid reaction that takes a few days or weeks followed by a much slower reaction that takes up to few years or decades. It is the slow processes as well as their interactions with P-addition practices that regulate soil P forms associating with bioavailability and impacts on water quality through losses, due to build-up from long-term applications with low use efficiency. A range of issues relating to P in long-term fertilized/manured soils will be discussed in this session, including 1) behaviours of P determined using chemical and/or instrumental approaches, such as XANES and NMR; 2) trend and transformation pathway; 3) bioavailability and agronomic values of residual P in soil; and 4) P losses and their pathways from soil to water.


Environmental Quality, Soil Chemistry, Soil Fertility & Plant Nutrition, Nutrient Management & Soil & Plant Analysis, Z03 Canadian Society of Soil Science
Wednesday, October 19, 2011: 1:00 PM-3:50 PM
Henry Gonzalez Convention Center, Room 212A

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Tiequan Zhang and Chin Tan
Chin Tan and Tiequan Zhang
1:05 PM
Long-Term (≥45 yrs) Cumulative Effects of Fertilization and Cropping Systems On Soil Phosphorus Forms and Losses In Field Water Discharge.
Tiequan Zhang, Agriculture and Agri-Food Canada; Chin Tan, Agriculture and Agri-Food Canada; Q.C. Hu, Agriculture and Agri-Food Canada; C.F. Drury, Agriculture and Agri-Food Canada; Z.M. Zheng, Agriculture and Agri-Food Canada
1:20 PM
Phosphorus Loss Through Subsurface Tile Drainage During Eleven Years of Manure or Fertilizer Application for Corn and Soybean.
Mazhar U. Haq, Iowa State University; Antonio P. Mallarino, Iowa State University; Rameshwar S. Kanwar, Iowa State University; Pederson H. Carl, Iowa State University; Pecinovsky T. Kenneth, Iowa State University; Matthew J. Helmers, Iowa State University
2:05 PM
Phosphorus Leaching Through Intact Soil Columns From Fertilized and Manure Amended Plots with and without Incorporation.
Darshani Kumaragamage, University of Winnipeg; Peter Tan, University of Winnipeg; Olalekan Akinremi, University of Manitoba; Donald Flaten, University of Manitoba
2:20 PM
2:35 PM
Tillage and Cover Crop Effect On Soil Phosphorus Dynamics After Manure Application.
James Hoorman, The Ohio State University; Khandakar Islam, The Ohio State University; Yogendra Raut, The Ohio State University; Randall C. Reeder, The Ohio State University; Norman Fausey, USDA-ARS Soil Drainage
3:05 PM
Spatial and Temporal Variability of Leached Nitrate From Field Core Lysimeters and Hummocky Prairie Landscape.
Olalekan O. Akinremi, University of Manitoba; Rezvan Dehkordi, University of Manitoba; Lekan Solomon Olatuyi, University of Manitoba; Francis Zvomuya, University of Manitoba; Donald Flaten, University of Manitoba; David Lobb, University of Manitoba
3:20 PM
Phosphorus Release From Ditch Mesocosms: The Effects of Pedology and Hydrology.
David E. Ruppert, Texas A&M - Kingsville; Brian A. Needelman, University of Maryland; Bahram Momen, University of Maryland; Martin Rabenhorst, University of Maryland; Bruce James, University of Maryland; Peter Kleinman, USDA-ARS
3:35 PM
Spatial Distribution and Chemical Speciation of Soil P in Band.
Gourango Kar, University of Saskatchewan; Derek Peak, University of Saskatchewan; Jeffrey Schoenau, University of Saskatchewan
3:50 PM