Ornamental and Turf Pesticide Applicators Practice Exam

What physical condition is often observed when turf is stressed by Masked chafer infestation?

1. Bright green color throughout

2. Dead patches that do not recover

3. Constant moisture retention

4. Lush growth after irrigation

The correct answer is: Dead patches that do not recover

When turf is stressed by a Masked chafer infestation, one of the most noticeable physical conditions is the appearance of dead patches that do not recover. Masked chafers, which are larvae of certain beetles, feed on the roots of grass, leading to a loss of vital nutrients and moisture needed for the turf to thrive. As the roots are damaged, the grass is unable to absorb water and nutrients effectively, resulting in areas that turn brown and die off. These dead patches are often characterized by their inability to regenerate, even when normal care, such as watering and fertilization, is applied. Other conditions, such as a bright green color or lush growth after irrigation, suggest healthy turf, which is contrary to the impact of a Masked chafer infestation. Furthermore, constant moisture retention would not be a typical symptom, as the compromised root system that results from the infestation is unable to utilize moisture properly, potentially leading to drought stress instead. Understanding these symptoms helps in managing and addressing pest-related issues in turf maintenance effectively.