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|Source Publication:||World of Coal Ash Conference 2011 http://www.flyash.info/|
|Research Site:||Lab Experiment - Used-wallboard gypsum and FGD gypsum for this study were provided by Dr. Ron Chamberlain from the company, earth ANEW (Indianapolis, IN). As a control, reagent-grade calcium sulfate was obtained from Fisher Scientific (Pittsburgh, PA).|
|State:||Not State Specific|
|Contact Information:||USDA-ARS 10300 Baltimore Avenue, Building 007, Room 211, Beltsville, MD 20705|
|Category:||Proceedings & Bulletins & Research Reports|
|Download:||078-Codling-2011.pdf (671.8 KB)|
Corn root length for plants grown with FGD applications was not different from that of used-wallboard treatment. Byproducts enhanced corn root growth but not that of soybean. Soybean was more sensitive to the materials than corn; therefore one should take into account the crop to which these materials will be applied. The reduction observed in soybean root length with increasing byproduct application rate may not occur if these materials are applied to soil which has higher buffering capacity than sand. Also in this study cups were not allowed to drain compared to field condition where drainage will occur.