CO TURF QS TEST QUESTIONS WITH VERIFIED SOLUTIONS LATEST UPDATE

CO TURF QS TEST QUESTIONS WITH VERIFIED SOLUTIONS LATEST UPDATE What type of sites does the turfgrass industry in Colorado include? - Answers Lawns, institutional and industrial grounds, golf courses, athletic fields, and other recreational turf, parks, roadsides, airports, and cemetaries Most important factors in maintaining good turf (5) - Answers Selecting the right grass Mowing Watering Fertilizing Thatch control Types of cool season turfgrass (3) - Answers Bluegrass Tall fescue Ryegrass Type of warm season turfgrass (3) - Answers Bermudagrass Zoysia Buffalograss When do problems develop with turfgrass? - Answers When the grass is unable to withstand environmental stress or when good management cannot offset the effects of environmental stress What are the steps of diagnosing a problem in turfgrass? (5) - Answers 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 What is IPM? - Answers Integrated pest management An approach to pest management that relies on a combination of common-sense practices. Does IPM aim to eliminate all pests? - Answers No Maintain them at tolerable levels What are the five steps of IPM? - Answers Education Monitoring Prevention Intervention/Control Evaluation and Planning What is an action threshold? - Answers A point at which pest populations or environmental conditions indicate that pest control action must be taken What are the two types of action thresholds? - Answers Economic Aesthetic What is an economic action threshold? - Answers Point at which pest populations or environmental conditions indicate that pest control action must be taken to prevent an economic loss What is an aesthetic action threshold? - Answers Point at which pest populations or environmental conditions indicate that pest control action must be taken to prevent an aesthetic loss Example of a highly targeted chemical approach? - Answers Pheromones to inhibit reproduction in insects Soil management - Answers Very important in turfgrass management. pH of 6-7 is desired. Need adequate water and oxygen. Issues with soil management (7) - Answers Excessively wet Excessively dry Excessively acidic Excessively alkaline Prone to compaction Impenetrable Full of debris What are turfgrass cultivars? - Answers Types of grass species selected for specific characteristics such as disease resistance, tolerance to unusual environments, and appearance How do you provide tolerance to varied sites? - Answers Plant at least 2 different species or cultivars What are examples of cultural practices for turfgrass management? (4) - Answers Mowing Fertilizing Watering Cultivating What are the three important ingredients for turfgrass fertilizer management? - Answers Type of fert Rate of fert Timing of fert What is the most important fertilizer element in maintaining turfgrass? - Answers Nitrogen What are the two forms of nitrogen in fertilizer? - Answers Ammonium Nitrate What is fertilizer rate expressed as? - Answers lbs of N per 1,000 sq. ft. How much N should be applied per acre per application? - Answers .5-1 lb What other element (besides N-K-P) do Colorado lawns need? - Answers Due to high pH soils here, Iron (Fe) is needed in fertilizer applications Short term detrimental effects of mowing turfgrass? (5) - Answers Temporary cessation of root growth Reduces carbohydrate production and storage Created entry points for pathogens Temporarily increases water loss Reduces water absorption by roots What is the recommended mowing height for lawns? - Answers 2.5-3 inches Why is it better to leave clippings after mowing? - Answers Rich in N and recycle P into the soil Decompose very quickly What does the precise frequency of irrigating turfgrass depend on? (3) - Answers Soil type and infiltration rate Turfgrass species Transpiration rate What are positive effects of aeration on turfgrass? (5) - Answers Increases infiltration capacity Stimulates root growth within holes Increases shoot growth atop holes Controls thatch Improves responses to fertilizer How often should you core cultivate (aerate)? - Answers At least once per year. Ideally twice or more