What is a potential consequence of using too much fertilizer on turfgrass?

Using too much fertilizer on turfgrass can lead to burning of the plants due to nutrient overload. When fertilizers are applied in excessive amounts, particularly those high in nitrogen, they can create a situation where the turfgrass absorbs more nutrients than it can utilize. This can result in a condition known as "fertilizer burn," where the roots and the foliage of the grass become damaged. The symptoms often include yellowing or browning of the grass, which indicates stress and tissue damage.

In contrast, while improved color and growth may be a short-term effect of appropriate fertilizer application, over-application does not guarantee this outcome and can instead lead to damage. Similarly, while some nutrients can help with diseases and enhance soil structure, these benefits are typically associated with balanced fertilizer use, not excess application. Therefore, avoiding over-fertilization is crucial to maintaining healthy turfgrass.