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ARS Home » Southeast Area » Auburn, Alabama » Soil Dynamics Research » Research » Publications at this Location » Publication #310785

Research Project: Use of Flue Gas Desulfurization Gypsum (FGDG) to Improve Crop and Forage Production on Erodible Soils of the South

Location: Soil Dynamics Research

Title: Use of FGD gypsum to reduce p loss from agricultural fields

Author
item Watts, Dexter
item Torbert, Henry - Allen

Submitted to: American Society of Agronomy Branch Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 2/1/2015
Publication Date: 2/1/2015
Citation: Watts, D.B., Torbert III, H.A. 2015. Use of FGD gypsum to reduce p loss from agricultural fields [abstract]. American Society of Agronomy Branch Meeting. CDROM.

Interpretive Summary:

Technical Abstract: Controlling P loss from agricultural fields has become a major issue in recent years, especially in areas where manure is used as nutrient sources. It is believed that FGD gypsum can be used as a management practice to reduce soluble P loss. Thus, the objective of this study was to determine FGD gypsum’s impact on reducing soluble P loss from an agricultural soil. A series of studies was conducted to evaluate soluble P concentrations in soil and the potential for P loss to surface water runoff following poultry litter application to a bermudagrass (Cynodon dactylon L.) hayfield. Soluble P concentrations in soil were drastically reduced following FGD gypsum application. Similarly, FGD gypsum amendments were effective at reducing soluble P loss to surface water runoff. Results from this study show that FGD gypsum can be used as a management practice to reduce P loss following poultry litter application to agricultural fields.