CGM Turf Management & Sports Field Maintenance 2 — Questions and Answers
Question 1: What is the primary function of a subsurface drainage system in sports field construction?
- To provide irrigation water to the root zone from below
- To remove excess water quickly and prevent waterlogging of the playing surface (Correct answer)
- To filter out pesticide residues before they reach groundwater
- To store stormwater for later irrigation use
Correct answer: To remove excess water quickly and prevent waterlogging of the playing surface
Subsurface drainage systems remove excess water from the root zone, preventing waterlogging and allowing the field to be used sooner after rainfall.
Question 2: What type of field marking paint is generally recommended for natural turfgrass sports fields?
- Oil-based paint for long-lasting durability
- Latex-based or water-based paint that is non-toxic to turf (Correct answer)
- Aerosol spray paint designed for pavement surfaces
- Chalk-based paint that washes away with the first rain
Correct answer: Latex-based or water-based paint that is non-toxic to turf
Latex or water-based field marking paints are recommended for natural turf because they are non-toxic to grass and allow the turf to continue growing normally.
Question 3: What is 'scalping' in turfgrass management?
- A technique to remove excess thatch by vertical cutting
- Removing the green leaf tissue by mowing too low and exposing brown stems (Correct answer)
- A process of removing diseased turf for renovation
- The mechanical removal of broadleaf weeds from the turf
Correct answer: Removing the green leaf tissue by mowing too low and exposing brown stems
Scalping occurs when the mowing height is set too low, removing the green photosynthetic leaf tissue and exposing the brown, woody stems beneath.
Question 4: What is the best time to overseed a cool-season sports field in the transition zone?
- Late spring, when temperatures are warming rapidly
- Midsummer, during peak heat stress
- Early fall, when soil is still warm but air temperatures are cooling (Correct answer)
- Mid-winter, during full turf dormancy
Correct answer: Early fall, when soil is still warm but air temperatures are cooling
Early fall is optimal for overseeding cool-season grasses because warm soil temperatures promote germination while cooler air temperatures reduce heat stress and weed competition.
Question 5: What is the primary purpose of conducting a soil test before establishing or renovating a sports field?
- To determine the presence of underground utilities and pipes
- To identify soil pH, nutrient levels, and texture to guide amendments (Correct answer)
- To assess compaction depth caused by heavy construction equipment
- To check for the presence of nematodes and soil-borne pathogens
Correct answer: To identify soil pH, nutrient levels, and texture to guide amendments
Soil testing identifies pH, nutrient deficiencies, and soil texture, allowing managers to make targeted amendments to optimize turf establishment and long-term performance.
Question 6: Which irrigation scheduling method uses evapotranspiration (ET) data to determine watering needs?
- Calendar-based scheduling on a fixed weekly interval
- Sensor-based scheduling using tensiometers or soil moisture probes
- ET-based or weather-based scheduling (Correct answer)
- Visual inspection scheduling based on wilt signs
Correct answer: ET-based or weather-based scheduling
ET-based irrigation scheduling uses weather data to calculate water lost through evaporation and plant transpiration, enabling precise irrigation to replace only what was consumed.
Question 7: How is heavy traffic wear in goal mouth areas of soccer fields typically managed?
- By permanently installing artificial turf only in the goal mouth zones
- Through targeted overseeding, topdressing, and temporary traffic restrictions during recovery (Correct answer)
- By elevating the soil level to create a slight mound in wear areas
- By applying plant growth regulators to slow grass growth in high-wear areas
Correct answer: Through targeted overseeding, topdressing, and temporary traffic restrictions during recovery
Goal mouth wear is managed through targeted overseeding, topdressing, and temporary traffic restrictions that allow new turf to establish and restore consistent playing conditions.
CGM Turf Management & Sports Field Maintenance 2
What is the primary function of a subsurface drainage system in sports field construction?