What is a sign of mower injury to turfgrass?

Mower injury to turfgrass is often indicated by shredded blades with uneven cuts. This type of damage occurs when a lawn mower's blades are dull or improperly adjusted, leading to the grass being torn rather than cut cleanly. When the blades are shredded, they show a frayed appearance, which can make the grass more susceptible to disease and stress. Over time, this type of injury can lead to a decline in the overall health of the turf, manifesting as discoloration or irregular growth patterns.

In contrast, irregular patches of yellow turf can originate from a number of stressors such as drought, disease, or nutrient deficiencies, and aren't specifically indicative of mower injury. The presence of molehills relates to underground activity by animals like moles, which is unrelated to mowing practices. Similarly, spilled fertilizer on grass can lead to burning and other forms of chemical stress, but this does not reflect the mechanical injuries caused by mowing. Understanding the distinct signs of mower injury can help in maintaining healthy turfgrass and avoiding future damage.