Turf Pest Management 3B Exam 2023

What is included in turfgrass management? - Answer- proper grass selection, mowing, thatch control An example of a cool season grass is: - Answer- bluegrass, tall fescue, What causes most turfgrass diseases in the Midwest? - Answer- Fungi The following practices can help prevent the development of disease - Answer- improve airflow and light availability, select appropriate turf species, provide appropriate fertility the first step in the control of any turfgrass disease is: - Answer- accurate diagnosis To diagnose turfgrass diseases, the following is important: - Answer- review cultural and chemical practices, determining the overall distribution of the disease, observe symptoms on individual plants. Leaf spot and melting-out disease is caused by a: - Answer- fungus from a distance, rust infected turf appears: - Answer- dull yellow Powdery mildew can be reduced by - Answer- pruning trees and shrubs In order to manage large patch fungus, it is important to: - Answer- avoid overwatering in the fall and early spring Spring dead spot is the most common disease of: - Answer- bermudagrass Fairy ring is caused by: - Answer- Fungi Necrotic ring spot symptoms may be confused with summer patch and - Answer- fairy ring In lawn hight turf, dollar spot causes these symptoms: - Answer- tan or bleached patches 2-6 inches in diameter Rhizoctonia brown patch is the most common and important disease on - Answer- tall fescue In the control of brown patch ______________ is important - Answer- proper fertilization, proper irrigation, proper air circulation Summer patch is: - Answer- extremely difficult to control Slime molds are ___________ parasitic on plants. - Answer- not Chlorosis is when the turf becomes _____________ in color. - Answer- yellowish. Moss occurs in lawns with: - Answer- low fertility, poor drainage (compaction), thinned turf Thatch is not caused by: - Answer- returning clippings to the turf stand. Knotweed and spurge are examples of - Answer- broadleaf summer annual weeds _______________ are the most difficult weeds to control in turfgrass - Answer- perennial grass weeds When should warm season grasses be fertilized? - Answer- between mid-May and mid-August ____________ is a low-growing compact, tufted winter annual that does not have rhizomes and has leaves that are soft light green and boat-shaped at the tip. - Answer- annual bluegrass Common chickweed - Answer- is found frequently in the shade _________ forms a large rosette with reddish leaves and crinkled edges. It does not usually flower when growing in lawns. - Answer- curly dock _________ is a warm- season grass found frequently in thin bluegrass stands. It has flattened stems that white near the base and a fibrous root system that make it difficult to pull. - Answer- goosegrass henbit - Answer- usually blossoms in the early spring ___________ is a winter annual and may be confused with dandelions because the leaves form a rosette in the fall. - Answer- shepherdspurse The thistle is a: - Answer- perennial or summer annual The common yarrow is: - Answer- strongly scented A preemergent herbicid: - Answer- is applied to the soil, works best on annuals, stops growth of the seed. 2,4-D is an example of a: - Answer- selective postemergence herbicide Why is it dangerous to apply ester formulations around ornamentals? - Answer- volatilization or vapor hazards When are granular formulations of postemergence herbicides more effective? - Answer- When weeds are damp, when applied in late evening or early morning. The following is true concerning gravity flow liquid applicators: - Answer- eliminate drifting. A hose-end sprayer is a common name used for: - Answer- water pressure applicators A common factor influencing weed control with soil- and foliage - applied herbicides. - Answer- uniformity of application How can spray drift and possible damage to nontarget plants be minimized. - Answer- apply spray when wind is less that 10 mph. Spraying equipment used for phenoxy herbices: - Answer- should not be used for other pesticides unless thoroughly cleaned. Where should pesticides not be stored? - Answer- in greenhouses Low-Pressure sprayers are: - Answer- used mainly on turf High pressure sprayer handguns are not usually not recommended for: - Answer- golf greens The following is true concerning turfgrass pest management: - Answer- a working knowledge of common pests is important to control them. What other problems can resemble insect damage to turfgrass? - Answer- improper mowing, fertilizer burn, improper pesticide use. To determine if the insecticide application was successful or not is known as: - Answer- evaluation The following is true concerning thatch in turfgrass: - Answer- it augments the effectiveness of insecticides. The most destructive turfgrass pest in Kanas is the: - Answer- bluegrass sod webworm How do sod webworms damage turfgrass? - Answer- They chew off blades near the soil and expose the crown to sunlight. When should insecticide be applications for sod webworm larvae be considered? - Answer- when 2-4 webworms per 1 sqft are detected.