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United States Department of Agriculture

Agricultural Research Service

Research Project: Using Agricultural and Industrial Byproducts to Improve Crop Production Systems and Environment Quality

Location: National Soil Dynamics Laboratory

Title: Gypsum use to reduce P loss from agricultural fields

Authors
item Watts, Dexter
item Torbert, Henry
item Mitchell, Charles -

Submitted to: Agricultural Experiment Station Publication
Publication Type: Experiment Station
Publication Acceptance Date: November 1, 2013
Publication Date: December 2, 2013
Citation: Watts, D.B., Torbert III, H.A., Mitchell, C.C. 2013. Gypsum use to reduce P loss from agricultural fields. Alabama Experiment Station Publication. Available: http://aurora.auburn.edu/repo/bitstream/handle/11200/44267/Gypsum%20Bulletin_2013.pdf?sequence=2.

Interpretive Summary: Public concern regarding agriculture’s contribution to surface water quality impairment has increased in recent years. Repeated manure use on agricultural fields at agronomic N rates has created a redistribution of P in soils which increases the risk of P contribution to surface waters, deteriorating surface water quality. Gypsum use as a soil amendment seems promising as a BMP to reduce P losses from agricultural fields. The current study provides valuable information needed to fine-tune current prescriptions for BMPs needed to maintain environmental sustainability.

Technical Abstract: Public concern regarding agriculture’s contribution to surface water quality impairment has increased in recent years. Repeated manure use on agricultural fields at agronomic N rates has created a redistribution of P in soils which increases the risk of P contribution to surface waters, deteriorating surface water quality. Gypsum use as a soil amendment seems promising as a BMP to reduce P losses from agricultural fields. The current study provides valuable information needed to fine-tune current prescriptions for BMPs needed to maintain environmental sustainability.

Last Modified: 10/21/2014
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