CH Turfgrass Management 3

Question 1

Dollar spot disease in turfgrass is most commonly associated with which conditions?

Accepted Answer

Low nitrogen fertility and alternating wet/dry periods with moderate temperatures

Answer

High nitrogen fertility and consistently wet soils

Answer

Compacted soils and heavy shade throughout the day

Answer

High soil pH and extended drought stress

Question 2

Which statement about turfgrass dormancy is correct?

Accepted Answer

Cool-season grasses can go dormant in summer heat; warm-season grasses go dormant in cool winters

Answer

Dormancy always indicates permanent turf death and requires reseeding

Answer

Dormancy only occurs in warm-season grasses, never in cool-season species

Answer

Dormant turf should be heavily irrigated to force it out of dormancy quickly

Question 3

What is the primary benefit of using slow-release nitrogen fertilizers on turfgrass compared to quick-release forms?

Accepted Answer

They provide a more consistent nutrient supply over time and reduce the risk of fertilizer burn

Answer

They significantly reduce soil pH more effectively than quick-release products

Answer

They release nitrogen faster than soluble quick-release fertilizers

Answer

They eliminate the need for phosphorus and potassium supplementation

Question 4

Brown patch disease in turfgrass is caused by which pathogen?

Accepted Answer

Rhizoctonia solani

Answer

Pythium aphanidermatum

Answer

Fusarium graminearum

Answer

Sclerotinia homoeocarpa

Question 5

Which practice BEST helps reduce turf compaction in high-traffic areas over time?

Accepted Answer

Combining core aeration with sand topdressing

Answer

Increasing mowing frequency to keep grass short

Answer

Reducing irrigation to limit root growth

Answer

Applying a pre-emergent herbicide to prevent weed competition

Question 6

What does the term 'transition zone' refer to in turfgrass management?

Accepted Answer

A geographic region of the mid-United States where neither cool-season nor warm-season grasses are fully adapted

Answer

The grassy border area between a lawn and an adjacent garden bed

Answer

The boundary between a Kentucky bluegrass stand and a tall fescue planting

Answer

A strip of turf that is currently undergoing a renovation from one species to another

Question 7

Proper irrigation timing for turfgrass is generally recommended during which part of the day?

Accepted Answer

Early morning to minimize evaporation and reduce fungal disease risk

Answer

Midafternoon when evaporation rates are at their highest

Answer

Late evening after sunset to maximize overnight soil moisture

Answer

Midday to cool the grass canopy during peak temperature stress