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Gypsum application may increase crop yields for an extended time. Corn grain yields were increased by 29 to 50% and alfalfa yields by 70% in the 16th year after gypsum was applied a to coarse sandy loam soil in Georgia. The long-lasting beneficial effects of gypsum on crop yield enabled the expense of gypsum application to be amortized during an extended period of time. Soil Science Society of America Journal 63:891-895, July-August 1999.
Gypsum applications may promote the expansion of no-tillage crop production systems onto clay soils that have usually not been no-tilled because of compaction and aeration problems. Gypsum can increase water penetration and improve internal soil drainage because it dissolves quickly to release calcium that promotes the aggregation of soil clay particles.
This report summarizes research on a broad spectrum of agricultural uses of FGD products. Topics vary from wet FGD material as a soil liming agent in traditional agriculture to fluidized bed combustion (FBC) ash as a component of synthetic soils in horticulture. Potential volumes of use and constraints to increased use are considered. Subjects or topics in particular need of additional research are identified.
International Experience with Agricultural Uses of FGD Products
Interest in using FGD products in agriculture is increasing in many countries, such as China. Soil Reclamation Using FGD Byproduct in China
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