erosion

AMES, Iowa – Researchers at Iowa State University will test how the environmental benefits of planting strips of prairie among row crops change over time, filling in an unexplored gap in prairie strip research that stretches back over a decade.

Dr. Brian K Gelder
Adjunct Assistant Professor
Scientist II

Limiting Nitrogen Immobilization in Cover Crop Systems
Funded by the Iowa Nutrient Reduction Strategy

Issue: Cover crops have significant potential to improve water quality by limiting erosion when row crops are not growing, and by limiting the loss of nitrogen by leaching. Yet widespread adoption has been limited, as the yield of subsequent-year corn crops may be negatively affected by cover crops. One reason for this is the potential for immobilization of nitrogen from soil organic matter as cover crop residues decompose.

Amounts and Forms of Dissolved Phosphorus Lost with Surface Runoff as Affected by Phosphorus Management and Soil Conservation Practices
Funded by the Iowa Nutrient Reduction Strategy

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