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ARS Home » Southeast Area » Auburn, Alabama » Soil Dynamics Research » Research » Publications at this Location » Publication #297074
Title: Gypsum use to reduce P loss from agricultural fields

Author
item Watts, Dexter
item Torbert, Henry - Allen
item MITCHELL, CHARLES - Auburn University

Submitted to: Agricultural Experiment Station Publication
Publication Type: Experiment Station
Publication Acceptance Date: 11/1/2013
Publication Date: 12/2/2013
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.