How do chinch bugs affect turf grass?

Chinch bugs are known to infest turf grass, where they primarily feed on the plant by sucking sap from the blades. This feeding behavior leads to significant damage because it removes vital nutrients and water from the grass, resulting in yellowing, wilting, and ultimately death of the grass if the infestation is severe. The sap they extract is crucial for the health of the grass, and their presence can turn healthy patches into brown, dead areas.

In contrast, the other choices do not accurately describe the impact of chinch bugs on turf grass. They do not promote healthy growth, facilitate nutrient absorption, or provide shade, as their feeding is detrimental rather than beneficial. Understanding the negative effects of pests like chinch bugs is essential for effective turf management and for maintaining a healthy lawn.