Managing Global Resources for a Secure Future

2017 Annual Meeting | Oct. 22-25 | Tampa, FL

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216 Managing, Manipulating, and Predicting Phosphorus Losses in Phosphorus Saturated Soils: Current State of the Science Oral (includes student competition)

Oral Session
SSSA Division: Soils and Environmental Quality
Many soils in the developed countries with intensive animal production are sufficiently saturated with phosphorus (P) due to the historic applications of animal manures. This has resulted in elevating soil test P (STP) to above agronomic levels, which limits farmers to effectively recycle manures. In these settings, there is increased regulatory pressure to reduce manure applications. This session seeks presentations that articulate innovative and transformative solutions to effectively manage future manure applications in P saturated soils, suggest ways to manipulate STP that decreases P loss, and recommend strategies to better predict decline in STP and P loss to water bodies.

Approved for NM 2.5 CEUs

Cosponsor(s):

Nutrients and Environmental Quality Community

Tuesday, October 24, 2017: 9:30 AM-12:00 PM
Marriott Tampa Waterside, Room 4

Organizers:
Hui Li , Gurpal S Toor and Andrew N. Sharpley
Moderators:
Gurpal S Toor and Andrew N. Sharpley
9:30 AM
Introductory Remarks
9:35 AM
216-1
Quantitative Approach for Recovering Legacy Phosphorus in Soils.
Vimala D. Nair, University of Florida; Lynn Sollenberger, University of Florida; Andressa Freitas, University of Florida; Biswanath Dari, University of Florida; Willie Harris, University of Florida; Jose Carlos Batista Dubeux Jr., University of Florida
Audio File Recorded Presentation
9:50 AM
216-2
Long-Term Patterns of Soil Test Phosphorus and Phosphorus Loss in Soils Historically Applied with Swine Manure Compost.
Tiequan Zhang, Agriculture & Agri-Food Canada; Chin Tan, Agriculture & Agri-Food Canada; Yutao Wang, Agriculture & Agri-Food Canada; Tom Welacky, AAFC
10:05 AM
216-3
Soil Phosphorus Persistence after Manure Phosphorus Loading.
Emileigh Lucas, University of Maryland; Joshua M. McGrath, University of Kentucky; Frank Coale, University of Maryland; Robert Kratochvil, University of Maryland; Patricia M. Steinhilber, University of Maryland
Audio File Recorded Presentation
10:20 AM
216-4
Limitations in Estimating Phosphorus Sorption Capacity from Soil Properties.
Carl H. Bolster, USDA-ARS; Peter A. Vadas, USDA-ARS
Audio File Recorded Presentation
10:35 AM
216-5
Extractability and Fractionation of Phosphorus in Different Biochars.
Mingxin Guo, Delaware State University; Zhongqi He, USDA-ARS
10:50 AM
Break
11:00 AM
216-6
A Critical Source Area Index for Legacy Soil Phosphorus Management That Uses Water Extractable Phosphorus and Lidar DEMs.
Ian Alistair Thomas, Teagasc; Paul N.C. Murphy, University College Dublin; Per-Erik Mellander, Teagasc; Owen Fenton, Teagasc; Oliver Shine, Teagasc; Faruk Djodjic, Swedish University of Agricultural Sciences; Paul Dunlop, Ulster University; Phil Jordan, Ulster University
Audio File Recorded Presentation
11:15 AM
216-7
Phosphorus Source Identification Along Various Streams in the Minnesota River Basin.
Ashley Lynn Grundtner, University of Minnesota; Satish C. Gupta, University of Minnesota; William James, University of Wisconsin - Stout
11:30 AM
216-8
Estimating Rates of Soil Phosphorus Drawdown Using the Aple Model.
Peter A. Vadas, USDA-ARS; Nicole Fiorellino, Chesapeake College; Robert Kratochvil, University of Maryland; Frank Coale, University of Maryland
Audio File Recorded Presentation
11:45 AM
Cancelled
12:00 PM
Adjourn
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