CO Turf QS Test Questions with Answers
1. What type of sites does the turfgrass industry in Colorado include?: Lawns, institutional and industrial grounds, golf
courses, athletic fields, and other recreational turf, parks, roadsides, airports, and cemetaries
2. Most important factors in maintaining good turf (5): Selecting the right grass
Mowing Watering
Fertilizing Thatch
control
3. Types of cool season turfgrass (3): Bluegrass
Tall fescue Ryegrass
4. Type of warm season turfgrass (3): Bermudagrass
Zoysia Buttalograss
5. When do problems develop with turfgrass?: When the grass is unable to withstand environ-
mental stress or when good management cannot offset the effects of environmental stress
6. What are the steps of diagnosing a problem in turfgrass? (5): Determine the kind of grasses involved
Find out why, if possible, the problem occurred
Determine if it can be corrected by management practices, soil modification, or pesticides Check to see if a chemical is
labeled for both the species and the problem
Recommend good cultural practices that will assist in recovery
7. What is IPM?: Integrated pest management
An approach to pest management that relies on a combination of common-sense practices.
,8. Does IPM aim to eliminate all pests?: No Maintain them at
tolerable levels
9. What are the five steps of IPM?: Education Monitoring
Prevention Intervention/Control
Evaluation and Planning
10. What is an action threshold?: A point at which pest populations or environmental conditions indicate that pest control action
must be taken
11. What are the two types of action thresholds?: Economic Aesthetic
12. What is an economic action threshold?: Point at which pest populations or environmental conditions indicate that
pest control action must be taken to prevent an economic loss
13. What is an aesthetic action threshold?: Point at which pest populations or environmental conditions indicate that
pest control action must be taken to prevent an aesthetic loss
14. Example of a highly targeted chemical approach?: Pheromones to inhibit reproduction in insects
15. Soil management: Very important in turfgrass management. pH of 6-7 is desired. Need adequate water and oxygen.
16. Issues with soil management (7): Excessively wet
Excessively dry
Excessively acidic Excessively
alkaline Prone to compaction
Impenetrable
Full of debris
17. What are turfgrass cultivars?: Types of grass species selected for specific characteristics such as disease resistance,
tolerance to unusual environments, and appearance
18. How do you provide tolerance to varied sites?: Plant at least 2 ditterent species or cultivars
, 19. What are examples of cultural practices for turfgrass management? (4): Mow- ing
Fertilizing
Watering
Cultivating
20. What are the three important ingredients for turfgrass fertilizer manage-
ment?: Type of fert Rate
of fert
Timing of fert
21. What is the most important fertilizer element in maintaining turfgrass?: Nitro- gen
22. What are the two forms of nitrogen in fertilizer?: Ammonium Nitrate
23. What is fertilizer rate expressed as?: lbs of N per 1,000 sq. ft.
24. How much N should be applied per acre per application?: .5-1 lb
25. What other element (besides N-K-P) do Colorado lawns need?: Due to high pH soils here, Iron (Fe) is
needed in fertilizer applications
26. Short term detrimental effects of mowing turfgrass? (5): Temporary cessation of root growth
Reduces carbohydrate production and storage Created entry
points for pathogens Temporarily increases water loss
Reduces water absorption by roots
27. What is the recommended mowing height for lawns?: 2.5-3 inches
28. Why is it better to leave clippings after mowing?: Rich in N and recycle P into the soil Decompose very
quickly
1. What type of sites does the turfgrass industry in Colorado include?: Lawns, institutional and industrial grounds, golf
courses, athletic fields, and other recreational turf, parks, roadsides, airports, and cemetaries
2. Most important factors in maintaining good turf (5): Selecting the right grass
Mowing Watering
Fertilizing Thatch
control
3. Types of cool season turfgrass (3): Bluegrass
Tall fescue Ryegrass
4. Type of warm season turfgrass (3): Bermudagrass
Zoysia Buttalograss
5. When do problems develop with turfgrass?: When the grass is unable to withstand environ-
mental stress or when good management cannot offset the effects of environmental stress
6. What are the steps of diagnosing a problem in turfgrass? (5): Determine the kind of grasses involved
Find out why, if possible, the problem occurred
Determine if it can be corrected by management practices, soil modification, or pesticides Check to see if a chemical is
labeled for both the species and the problem
Recommend good cultural practices that will assist in recovery
7. What is IPM?: Integrated pest management
An approach to pest management that relies on a combination of common-sense practices.
,8. Does IPM aim to eliminate all pests?: No Maintain them at
tolerable levels
9. What are the five steps of IPM?: Education Monitoring
Prevention Intervention/Control
Evaluation and Planning
10. What is an action threshold?: A point at which pest populations or environmental conditions indicate that pest control action
must be taken
11. What are the two types of action thresholds?: Economic Aesthetic
12. What is an economic action threshold?: Point at which pest populations or environmental conditions indicate that
pest control action must be taken to prevent an economic loss
13. What is an aesthetic action threshold?: Point at which pest populations or environmental conditions indicate that
pest control action must be taken to prevent an aesthetic loss
14. Example of a highly targeted chemical approach?: Pheromones to inhibit reproduction in insects
15. Soil management: Very important in turfgrass management. pH of 6-7 is desired. Need adequate water and oxygen.
16. Issues with soil management (7): Excessively wet
Excessively dry
Excessively acidic Excessively
alkaline Prone to compaction
Impenetrable
Full of debris
17. What are turfgrass cultivars?: Types of grass species selected for specific characteristics such as disease resistance,
tolerance to unusual environments, and appearance
18. How do you provide tolerance to varied sites?: Plant at least 2 ditterent species or cultivars
, 19. What are examples of cultural practices for turfgrass management? (4): Mow- ing
Fertilizing
Watering
Cultivating
20. What are the three important ingredients for turfgrass fertilizer manage-
ment?: Type of fert Rate
of fert
Timing of fert
21. What is the most important fertilizer element in maintaining turfgrass?: Nitro- gen
22. What are the two forms of nitrogen in fertilizer?: Ammonium Nitrate
23. What is fertilizer rate expressed as?: lbs of N per 1,000 sq. ft.
24. How much N should be applied per acre per application?: .5-1 lb
25. What other element (besides N-K-P) do Colorado lawns need?: Due to high pH soils here, Iron (Fe) is
needed in fertilizer applications
26. Short term detrimental effects of mowing turfgrass? (5): Temporary cessation of root growth
Reduces carbohydrate production and storage Created entry
points for pathogens Temporarily increases water loss
Reduces water absorption by roots
27. What is the recommended mowing height for lawns?: 2.5-3 inches
28. Why is it better to leave clippings after mowing?: Rich in N and recycle P into the soil Decompose very
quickly
