What characteristic is associated with thatch accumulation?

Thatch accumulation is commonly associated with excessive clipping left on the turf. Thatch is a layer of organic matter, primarily composed of dead grass stems, roots, and other plant material, that builds up on the soil surface. When grass is mowed, if too many clippings are left on the lawn or if they are too long, this can hinder decomposition and contribute to thatch buildup.

Clipping left on the lawn can create a mat-like condition, which can impede water penetration, air exchange, and nutrient absorption as it competes with the soil beneath. Proper lawn care practices include regularly mowing and either bagging the clippings or ensuring that they are finely shredded so that they can decompose quickly and contribute positively to the soil without leading to thatch buildup.

While the other factors may influence lawn health and growth, they do not directly relate to the characteristic of thatch accumulation in the way that the presence of excessive clipping does.