CGM Grounds Maintenance & Landscape Management 2

Question 1

What is the primary purpose of topdressing a turfgrass area with sand?

Accepted Answer

To improve surface smoothness and thatch decomposition

Answer

Topdressing with sand improves surface smoothness, dilutes thatch, and enhances drainage in turfgrass areas.

Question 2

Which mowing practice best reduces scalping on undulating terrain?

Accepted Answer

Raising the cutting height

Answer

Raising the cutting height prevents the mower deck from dipping into low spots and cutting too close to the soil on undulations.

Question 3

A grounds manager notices broadleaf weeds appearing in a cool-season lawn. Which herbicide classification is most appropriate for selective control?

Accepted Answer

Post-emergent broadleaf herbicide

Answer

Post-emergent broadleaf herbicides selectively control dicot weeds without harming established cool-season turfgrass.

Question 4

What does the term 'evapotranspiration (ET) rate' represent in irrigation scheduling?

Accepted Answer

The combined water loss from soil evaporation and plant transpiration

Answer

ET rate measures total water lost to the atmosphere from both soil evaporation and plant transpiration, guiding irrigation replacement needs.

Question 5

Which type of pruning cut removes a branch back to its point of origin or a lateral branch?

Accepted Answer

Thinning cut

Answer

A thinning cut removes a branch entirely at its origin or back to a lateral, maintaining natural form and improving light penetration.

(CGM) Certified Grounds Manager Practice Test