Iowa Nutrient Reduction Strategy

Cover Crops and Nitrogen Retention

Cover crops are an integral component of cropping systems because they grow in the fall and early spring - that is, times when the soil would not have a growing corn or soybean crop. At present, cover crops are grown to benefit soil quality and reduce nitrate loss. In the future, ongoing research at ISU promises to identify additional benefits such as weed suppression. Cover crop acres are growing exponentially.

Does Quantity and Quality of Tile Drainage Water Impact In-stream Eutrophication Potential? Evidence from a Long-term Biofuel Cropping Systems Experiment
Funded by the Iowa Nutrient Reduction Strategy

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