Ent 462 Name ________________________1 December 2005Final Exam - 2005 (version A)Multiple 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. Fall armyworm larvae often make “pock marks” on golf greens, but when you soap flush them,they can be easily differentiated from black cutworms by: A. stripes running around theirbodies; B. stripes running down their bodies and a Y-shaped mark on the head capsule; C. having rows of spots due to the rows of sclerotized plates; D. being very small.____ 2. This year, a lot of lawns were killed in June and July, supposedly from the drought. When youpull on this dead turf, the grass stems break off easily and they appeared to be filled withsawdust. The pest most likely responsible for this turf death was the: A. billbug; B. sodwebworm; C. white grub; D. armyworm.____ 3. Finding frass pellets on the surface of thatch in turf is certainly an indicator of caterpillaractivity. When these pellets are straw colored, you know that: A. a preventive insecticide isneeded to prohibit the next generation; B. the caterpillars are likely gone and you should use asoap flush to determine if any are still active; C. the caterpillars are gone and you are “safe” forthis season; D. a fungal disease likely attacked the caterpillars.____ 4. Mixing a grub insecticide with a foliar fungicide is: A. likely to result in poor grub controlbecause fungicides often deactivate insecticides; B. generally an incompatible mix since theinsecticide should be watered in and the fungicide should be left on the leaf blades; C. not usingIPM strategies - e.g., one target and one spray!; D. the best use of time and products.____ 5. In early production of insect parasitic nematodes, the nematodes were obviously alive and ableto get into host insects, but they often wouldn’t kill the insects! This is most likely due to thenematodes: A. not having a lethal bacterium; B. having a non-lethal fungus; C. not being able tomove; D. getting “fat and lazy” in artificial culture!____ 6. A superintendent in Ohio complained that he was just couldn’t get rid of the sod webworms onhis greens. Almost every morning, his crew would spot the tell-tale patches of silk glisteningwith dew, about the size of a quarter, even after an insecticide application! You know that thissuperintendent is actually dealing with: A. dollar-spot disease; B. black cutworm first andsecond instar larvae; C. bowl-and-doily spiders; D. small-patch disease.____ 7. Crambid sod webworm females lay eggs: A. in masses attached to grass leaf blades; B. singlyon the tips of grass leaf blades; C. in masses on any structure overhanging turf; D. by droppingthem singly over the turf at night.____ 8. The best way to detect chinch bugs in turf is: A. with a light trap; B. using s soap flush to bringthem to the surface; C. with a “bug sucker,” as shown in the video clip!; D. by using the time-honored “hands-and-knees” method.Name ____________________________ 9. Clover mites are most commonly a pest due to: A. their extensive feeding on turf during thesummer months; B. the major damage they do only in the early spring; C. their nuisance factorwhen they lay eggs and shed their exoskeletons; D. transmitting diseases.____10. The most obvious damage from bermudagrass mite is: A. shortening of the internodal distancewhich causes “witchesbrooming”; B. a general yellowing of the turf; C. numeous tiny speckleson the leaf blades; D. sudden death in irregular patches.____11. Which of the following groups is not found in turf, world wide?: A. annual bluegrass weevil; B. mole crickets; C. white grubs; D. billbugs.____12. Which of the following turf pests does NOT overwinter as an adult? A. sod webworm; B. hairychinch bug; C. bluegrass billbug; D. annual bluegrass weevil.____13. The pest most commonly mistaken for “delayed spring green-up” or “spring deadspot” ofbermudagrass is: A. hunting billbug; B. tawny mole cricket; C. bermudagrass mite; D. Banksgrass mite.____14. Probably the MAIN reason for determining the species of grubs you may be dealing with is: A. they all have different life cycles; B. some have differing susceptibility to grub insecticides; C. your instructor thinks its important!; D. they feed at different soil levels.____15. Small C-shaped grubs were found in a sport field in mid-June. They had brown head capsulesbut no legs or raster pattern. You know that they must be: A. masked chafer grubs; B. blackturfgrass ataenius larvae; C. billbug larvae; D. crane fly maggots.____16. Each year, bronze cutworm adults emerge from a turf area every September, even when the turfhas been treated several times with caterpillar-killing insecticides during the summer. Thishappens because: A. the larvae are resistant to insecticides; B. the larvae aestivate; C. the larvaehibernate; D. the larvae migrate out of wood lots to pupate in the turf in late August.____17. Dumping grass clippings from gold course greens and tees adjacent to these surfaces is notrecommended, primarily because: A. to reduce disease; B. because black cutworm eggs arelikely in the clippings; C. sod webworm larvae are in the clippings; D. green June beetle adultsare attracted to the rotting turf.____18. Preventive control of white grubs is recommended: A. when using the new insecticides becausethey don’t kill second or third instar grubs very well!; B. only in high maintenance turf; C. when you have lots of thatch and organic matter in the soil; D. when there was a damagingpopulation of grubs the previous season.____19. The primary food of moles is: A. grubs; B. cutworms; C. grass roots; D. earthworms.____20. Annual bluegrass weevils and black turfgrass ataenius adults overwinter: A. in thatch; B. in oldearthworm burrows; C. in leaf litter or pine litter adjacent to golf courses; D. in small chambersconstructed in the soil, about two inches deep.Name ____________________________21. The mealybugs found in greenhouses are usually identified by: A. the shapes of their bodies; B. the waxy projections and presence or absence of stripes in the wax down their backs; C. thegenital pores which are only visible by microscopic examination; D. the shape and form of theirovisacs.____22. It has only recently been found that the annual bluegrass