nitrates
Groundwater nitrate contamination costs: A survey of private well owners
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Date Issued
2008
Conservation Drainage in the Middle Fork Crow River Watershed
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Date Issued
2011
Changes in yield and nitrate losses from using drainage water management in central Iowa, United States
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Date Issued
2012
Water table, drainage, and yield response to drainage water management in southeast Iowa
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Date Issued
2012
