Which nutrient management practice can negatively impact water bodies?

Overapplying phosphorus without considering runoff potential is indeed a practice that can negatively impact water bodies. When phosphorus is applied in excess, particularly in areas where there is a risk of runoff due to rainfall or irrigation, it can wash into nearby streams, lakes, or rivers. This influx of phosphorus can lead to eutrophication, where excessive nutrients promote algal blooms that deplete oxygen levels in the water and harm aquatic life.

Effective nutrient management strategies, such as applying nutrients based on soil tests, typically help ensure that fertilizers are applied at appropriate rates that meet plant needs without resulting in excess. Utilizing cover crops also assists in retaining nutrients in the soil and preventing erosion, while implementing crop rotation is beneficial for maintaining soil health and reducing nutrient depletion. However, neglecting to consider the runoff potential when applying phosphorus can create significant environmental challenges, making it crucial to approach nutrient applications thoughtfully.