CEPSCI Vegetation and Revegetation Techniques 1 — Questions and Answers
Question 1: What is the primary function of temporary seeding on a construction site?
- To improve the aesthetic appearance of the site
- To provide rapid vegetative cover that stabilizes exposed soil and reduces erosion during construction (Correct answer)
- To establish the permanent landscape
- To attract wildlife to the site
Correct answer: To provide rapid vegetative cover that stabilizes exposed soil and reduces erosion during construction
Temporary seeding provides a fast-growing vegetative cover on exposed soils to reduce erosion during construction activities, even though the vegetation will eventually be replaced with permanent cover.
Question 2: Which grass species is commonly used for temporary seeding in the eastern US because of its rapid germination and growth?
- Kentucky bluegrass
- Annual ryegrass or cereal rye (Correct answer)
- St. Augustine grass
- Bermudagrass
Correct answer: Annual ryegrass or cereal rye
Annual ryegrass and cereal rye germinate and establish quickly, making them ideal for temporary erosion control seeding in the eastern United States during cool and transitional seasons.
Question 3: Permanent seeding differs from temporary seeding in that it:
- Uses less seed per acre
- Establishes perennial, self-sustaining vegetation intended to remain as the final ground cover (Correct answer)
- Is only applied after construction is complete
- Requires no soil preparation
Correct answer: Establishes perennial, self-sustaining vegetation intended to remain as the final ground cover
Permanent seeding establishes perennial vegetation adapted to the local climate that will persist and provide long-term erosion control and final stabilization of the site.
Question 4: What soil amendment is most commonly applied before seeding to improve germination on disturbed sites?
- Motor oil
- Lime and fertilizer based on soil test results (Correct answer)
- Herbicide
- Gravel
Correct answer: Lime and fertilizer based on soil test results
Soil testing guides the application of lime to adjust pH and fertilizer to provide nutrients, both of which are critical for successful seed germination and establishment on disturbed soils.
Question 5: Hydroseeding combines seed with:
- Diesel fuel and aggregate
- Water, mulch, fertilizer, and tackifier sprayed as a slurry (Correct answer)
- Concrete and sand
- Herbicide and water
Correct answer: Water, mulch, fertilizer, and tackifier sprayed as a slurry
Hydroseeding applies a slurry of seed, water, mulch, fertilizer, and tackifier that bonds to the soil surface, providing an all-in-one seeding and mulching application.
Question 6: The best time to seed a disturbed site in temperate climates is typically:
- Midsummer during the hottest temperatures
- Late summer to early fall or early spring when temperatures favor germination and soil moisture is adequate (Correct answer)
- During the driest month of the year
- Immediately before a forecasted hard freeze
Correct answer: Late summer to early fall or early spring when temperatures favor germination and soil moisture is adequate
Late summer to early fall and early spring provide ideal soil temperatures and moisture conditions for seed germination in temperate climates, maximizing establishment success.
CEPSCI Vegetation and Revegetation Techniques 1
What is the primary function of temporary seeding on a construction site?