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Dry years cut nitrate loads in Iowa’s rivers

May 25, 2023  By Jared Strong, Iowa Capital Dispatch

The amount of farm fertilizers going into Iowa’s waterways diminished considerably with the widespread drought of recent years, according to newly released state data.

That data, which tracks the progress of the state’s Nutrient Reduction Strategy, received its first comprehensive update in years this week and is displayed in a series of online dashboards.

It shows that the amount of nitrate and phosphorus in the state’s rivers declined considerably in 2020 and 2021, the most recent years that are included in the dashboard. | READ MORE


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