Fertilizer and Swine Manure Management Systems: Impacts on Agronomic and Environmental Soil Phosphorus Tests and on Phosphorus Loss with Subsurface Drainage

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2003-01-01
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Sawyer, John
Kanwar, Rameshwar
Pederson, Carl
Baker, James
Pecinovsky, Kenneth
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Sawyer, John
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Kanwar, Rameshwar
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Abstract

Manure or fertilizer can be used to supply the phosphorus (P) needs of crops. However, excess P application increases the risk of P loss from fields and of water quality impairment through increased algae growth. Poor water quality in many Iowa lakes has prompted questions about the impact of P management practices on P loss from fields and the effectiveness of using agronomic soil tests for environmental purposes.

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Wed Jan 01 00:00:00 UTC 2003
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