immobilization

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.

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