What can result from applying too much fertilizer?

Applying too much fertilizer can lead to nutrient burn and water pollution. Nutrient burn occurs when excessive fertilizer causes a concentration of chemicals that can damage plant tissues, leading to symptoms such as leaf tip burn or wilting. This happens because the high salt concentration in the fertilizer draws moisture away from the plant roots, creating a stress response in the plant.

Water pollution is another critical consequence of over-fertilization. When rain or irrigation occurs, excess nutrients can wash away from the soil into nearby water bodies, leading to nutrient runoff. This runoff contributes to algal blooms in lakes and rivers, which can deplete oxygen in the water and harm aquatic life. Therefore, understanding the correct application rates for fertilizers is vital for protecting plant health and maintaining environmental quality.