CH Turfgrass Management

Question 1

Which of the following is classified as a cool-season turfgrass?

Accepted Answer

Kentucky bluegrass

Answer

Kentucky bluegrass is a cool-season grass that grows best at 60–75°F, unlike the warm-season grasses listed.

Question 2

What is the primary purpose of core aeration in turfgrass management?

Accepted Answer

To relieve soil compaction and improve air, water, and nutrient movement

Answer

Core aeration removes plugs of soil to relieve compaction and improve the movement of air, water, and nutrients to the root zone.

Question 3

Thatch in a turfgrass stand is best described as:

Accepted Answer

A layer of living and dead organic matter between the soil surface and green grass

Answer

Thatch is the layer of accumulated living and dead organic matter (stems, roots, rhizomes) situated between the soil surface and the actively growing green grass.

Question 4

What mowing height is generally recommended for Kentucky bluegrass during summer stress periods?

Accepted Answer

2.5–3.5 inches

Answer

Kentucky bluegrass is typically maintained at 2.5–3.5 inches in summer to promote deeper roots and improve heat and drought stress tolerance.

Question 5

Which warm-season turfgrass has the highest shade tolerance?

Accepted Answer

St. Augustinegrass

Answer

St. Augustinegrass has the best shade tolerance among commonly used warm-season grasses, making it suitable for partially shaded lawns in the South.

CH - Certified Horticulturist Practice Test

CH - Certified Horticulturist Practice Test

CH Turfgrass Management