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Yes, there are potential environmental concerns with fertilizer use that should be considered. Excess nitrogen and phosphorus from fertilizers can runoff into waterways, causing algal blooms and depleting oxygen levels, harming aquatic life. Nitrates can also contaminate groundwater. Synthetic fertilizers require energy-intensive manufacturing processes that contribute to greenhouse gas emissions. Proper fertilizer application rates, timing, and methods can minimize these risks. Choosing organic fertilizers and implementing practices like cover crops and buffer strips can also help reduce environmental impacts. The EPA provides guidance on reducing nutrient pollution from agriculture.