233 Current Agricultural and Environmental Uses of Gypsum

Oral Session
ASA Section: Environmental Quality
Gypsum (calcium sulfate) for agricultural use can be sourced from mines or from scrubbers in coal-burning electric power plants, also known as flu-gas desulfurization (FGD) gypsum. Chemically, both sources are very similar but FGD gypsum tends to have a smaller particle size unless it is pelletized. Gypsum in general can be used as a sulfur or calcium source to crops. Flue-gas desulfurization gypsum specifically has been shown to reduce phosphorus losses in runoff under certain conditions. This session will cover agronomic uses as well as environmentally related uses of gypsum.

Approved for 1.0 NM CEUs


By-product Gypsum Uses in Agriculture Community

Tuesday, November 8, 2016: 9:40 AM-11:00 AM
Phoenix Convention Center North, Room 127 B

Francisco J. Arriaga
Francisco J. Arriaga and Dexter B. Watts
9:40 AM
Introductory Remarks
10:00 AM
10:15 AM
Gypsum's Influence on Corn Yield and P Loss from an Eroded Southern Piedmont Soil.
Dexter B. Watts, USDA-ARS; H. Allen Torbert, USDA-ARS
10:30 AM
Feasibility of Flue-Gas Desulfurization Gypsum Applications to Wisconsin Soils for Reducing Phosphorus Losses.
Francisco J. Arriaga, University of Wisconsin-Madison; Greg Olson, Sand County Foundation
10:45 AM
Gypsum Effects on Crop Yield and Chemistry of Soil, Crop Tissue, and Vadose Zone Water: A Meta-Analysis.
Warren Dick, The Ohio State University/OARDC; David Kost, The Ohio State University/OARDC; Ken Ladwig, Electric Power Research Institute; Liming Chen, The Ohio State University/OARDC; Thomas M. DeSutter, North Dakota State University; Charles C. Mitchell, Auburn University; Dan Smeal, New Mexico State University; H. Allen Torbert, USDA-ARS; Dexter Watts, USDA-ARS; Lloyd Darrell Norton, USDA-ARS National Soil Erosion Research Laboratory (Retired); Richard Wolkowski, University of Wisconsin
11:00 AM