Symptoms or signs may identify plant diseases, which of the following is a disease sign?
a. Fungus growth on leaves
b. Wilting
C. Rotten Roots
d. All of the Above - ANSWER A. Fungus on leaves
Symptom- the reaction of the host plant to invasion by the parasite. I.E. Wilting
Sign- physical...
Georgia
Pesticide Exam
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Symptoms or signs may identify plant diseases, which of the following is a disease sign?
a. Fungus growth on leaves
b. Wilting
C. Rotten Roots
d. All of the Above - ANSWER A. Fungus on leaves
, Symptom- the reaction of the host plant to invasion by the parasite. I.E. Wilting
Sign- physical evidence of a pathogen, such as visible growth of fungus spores
Protecting groundwater from contamination is important because Georgia citizens depend on
groundwater as the source for drinking water.What percentage of Georgia citizens get their drinking
water from groundwater sources?
a. 15%-25%
b.35%-45%
c.55%-65%
d. 65%-75% - ANSWER d. 65%-75%
Verticillium wilt can be an important plant disease. In what region of Georgia is this disease most likely to
occur?
a. North Georgia
b. East Georgia
c. West Georgia
d. South Georgia - ANSWER a. North Georgia
Pathogens that cause wilt disease enters the plant through the roots.
Verticillium Wilt- Fungus; normally occurs in cooler areas with lower soil temperatures,
When does groundwater form?
Which of the following is a principle cause of the decline of plant and animal species?
a. pesticides
b.legal hunting activities
c. pollution
d. loss of habitat - ANSWER d
, T/F Soil fumigants are the only pesticide option to control nematodes. - ANSWER f
Which of the following federal agencies regulates pesticides to protect endangered species?
a. U.S. EPA
b. USDA
c. U.S. Fish and Wildlife Service
d. U.S. Forest Service - ANSWER a
T/F A warm season annual is a plant that emerges from seed in the fall and dies before summer. -
ANSWER f
What types of annual broadleaf weeds are the most difficult to control with preemergence herbicides?
a. small seeded broadleaf because the herbicide is less likely to contact the seed.
b. large seeded broadleaf because the seeds may emerge below the herbicide zone
c. broadleaves with burr seeds (cockleburr) because the burrs provide protection from herbicides
d. broadleaves with any size seeds that emerge very near the soil surface. - ANSWER b
T/F Soil-applied preemergence herbicides are generally more effective if they are applied after the weed
seeds germinate. - ANSWER f
T/F A selective herbicide is one that is selected by the Georgia Coorperative Extension Service because it
will control a wide range of broadleaf weeds and grasses. - ANSWER f
T/F Some contact herbicides may provide residual control as well as contact kill. - ANSWER t
Why are some weeds named annuals?
a. because you will see them nearly every year
b. because they have vegetative plant parts which permit survival from year to year
c. because they have a one year life cycle
d. because the latin word "nuual" refers to plants that produce large numbers of seeds - ANSWER c
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