Ent 462 Name ________________________11 December 2002Final Exam - 2002Multiple Guess. Select the BEST answer that completes the sentence or answers the question. Remember that your first guess is usually the best! Actually, there are probably only two answers thatmay fit, so you have to decide which of these two is best. Good Luck!____ 1. The mole cricket that is responsible for turf damage due to dislodging turf roots AND rootconsumption is the: A. Tawny; B. Southern; C. Native; D. European.____ 2. A large area of a lawn was found to be dead in October and the owners thought that it wasmerely drought. The turf did not pull up loosely like carpet, but the grass stems broke off easilyand they appeared to be filled with sawdust. They assumed that a disease must have also beenpresent, but the pest most likely responsible for this turf death was the: A. billbug; B. sodwebworm; C. white grub; D. armyworm.____ 3. Clover mites were found in the basement of a house. The home owner was told that they shouldget rid of all their house plants and use a herbicide to rid the lawn of clover. You know thatneither technique will work because: A. these mites feed on shrubs; B. the mites feed on moldsand mildews in mulches; C. grasses are the favorite food; D. cool conditions will cause themites to go away anyway.____ 4. The best time to “map” a golf course for mole cricket activity in order to determine wheredamage is likely to occur is: A. mid-summer; B. October through December; C. after springflights; D. never, they are too mobile and determination of where damage will occur isimpossible.____ 5. The winter grain mite is peculiar because it: A. has four pairs of legs; B. has pincher-likemouthparts; C. lays eggs; D. has a dorsal anus.____ 6. Trying to control large mole cricket nymphs and new adults in the fall is difficult, at best. Thenormally recommended formulation of a pesticide to be used at this time is: A. subsurfaceapplication; B. granular; C. normal spray with heavy watering in; D. baits.____ 7. Bermudagrass with characteristic witches’-broom stems is being attacked by: A. plant growthregular; B. bermudagrass mite; C. Banks grass mite; D. mycoplasma stunt.____ 8. Centipedegrass was found to be turning yellow and close inspection of the stems disclosed thatsomething had formed spittle-like material along the stem bases. This is most likely from: A.stem aphids; B. twolined spittlebugs; C. a family of tobacco chewers; D. none of these.____ 9. Chinch bugs commonly kill patches of turf. This is likely because: A. their salivary secretionsare toxic or clog up the vascular system; B. the nymphs attack the roots; C. foliage feeding pestsand drought generally result in dead turf; D. they transmit diseases.Name ____________________________10. An Ohio golf course superintendent claimed that he was being invaded by mole crickets. Fellow superintendents seriously doubted him but you know that the insects could have thebeen: A. European; B. native or northern; C. southern; D. shortwinged, mole crickets.____11. If you suspect billbugs are present in a lawn in June, the easiest way to diagnose them is to: A. soap flush some turf; B. use a cup changer; C. use a light trap; D. do the “tug test.”____12. The black turfgrass ataenius is different from most other turf infesting grubs in Ohio because it:A. has two generations per year; B. overwinters as second instar larvae; C. prefers thatch freeturf; D. all of these.____13. When using traditional IPM concepts, many feel that you should sample turf to determine ifsufficient grubs are present to warrant an application of Merit or MACH2. However, theproblem with this idea is that these new pesticides: A. are most effective when used aspreventives; B. only work when the pupal stage is reached; C. cause the behavior of the insectsto change; D. is that cheaper curative pesticides are available.____14. Which stage is not found in the typical spider mite? A. egg; B. adult; C. pupa; D. larva.____15. Small C-shaped grubs were found in a lawn. They had brown head capsules but no legs orraster pattern. You know that they must be: A. masked chafer grubs; B. black turfgrass ataeniuslarvae; C. billbug larvae; D. crane fly maggots.____16. Masked chafer populations appear to be more sensitive to drought than Japanese beetles, butboth have populations that decrease during drought years. This is most likely because: A. themasked chafer adults fly at night; B. Japanese beetles can feed on tree leaves and produce moreeggs; C. masked chafer grubs take three years to develop; D. all grub eggs require soil moistureto develop.____17. It is recommended that cutworm control on golf greens should include a pass of the sprayeroutside the green. This is to: A. reduce the risk of existing cutworms moving onto the green; B. stop birds from feeding; C. kill eggs; D. kill adults.____18. Preventive control of bluegrass billbugs, hairy chinch bugs, and annual bluegrass weevils arerecommended because: A. spring rains can cause outbreaks of Beauveria fungus, therebyeliminating the insects; B. all overwinter as adults and elimination of the adults will eliminatethe first generation of these pests; C. these pests are surface insects; D. almost no pesticide willkill these pests once they get started.____19. A lawn care firm sprayed for sod webworms in late August because the turf was thinning andthe customer complained that the lawn was littered with large grubs the next morning. Yoususpect: A. burrowing sod webworms; B. green June beetle grubs; C. leopard slugs; D.armyworms.____20. The only whitefly stage that can be used to be sure of determine the exact species beinginvolved is the: A. egg; B. crawler; C. scale; D. “pupa” (=last instar nymph)Name ____________________________21. A turf manager discovered numerous caterpillars in his thinning turf. She suspected that theywere sod webworms, but stated that they appeared to be much larger than normal and they hadcharacteristic stripes. From this description you know that they are: A. larvae of the larger sodwebworm; B. an armyworm of some sort; C. black or spotted cutworms; D. all of these.____22. Rotation of pesticides is commonly recommended when dealing with greenhouse pests. This isprimarily to avoid: A. development of resistance; B. accelerated degradation of the pesticides; C. pollution; D. subjecting the workers to pesticide residues.____23. White grubs feed high in the soil/thatch profile in