Return to course: Vineyard Soil Pest
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Vineyard Soil Pest Questions Final
1
Which nematode can create galls within the root system that look like “a string of pearls”
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The root knot nematodes, Meloidogyne incognita and other Meloidogyne spp.
The lesion nematode, Pratylenchus vulnus
The citrus nematodes, Tylenchulus semipenetrans
2
What can be said about phylloxera's resistance to chemical control?
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Phylloxera are highly resistant to chemical control, and you need to be very selective about which insecticide you use to control them.
Phylloxera are resistant to chemical control, and you need to time your insecticide application correctly to gain the upper hand.
Phylloxera are weak against chemical control, and you can often accidentally control them while using systemic insecticides to control other pests.
Phylloxera are so weak against chemical controls that not only can you accidentally control them with systemic insecticides, but flood irrigation and groundwater recharge can also control their numbers.
3
What can be said about the nematode resistance of RS-3 and RS-9?
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They have good resistance to Root-knot nematodes and other endoparasitic nematodes
They have good resistance to dagger nematodes and other ectoparasitic nematodes
They have a broad resistance to both endoparasitic and ectoparasitic nematodes
They lack any good nematode resistance
4
What types of organisms are killed by fumigation and anaerobic soil disinfestation (ASD)?
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It only kills plant parasitic pests
It only kills microorganisms
It kills all microorganisms
It kills any life that requires oxygen to live
5
What can be said about the nematode resistance of GRN-1, GRN-2, GRN-3, GRN-4, and GRN-5
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They have good resistance to Root-knot nematodes and other endoparasitic nematodes
They have good resistance to dagger nematodes and other ectoparasitic nematodes
They have a broad resistance to both endoparasitic and ectoparasitic nematodes
They lack any good nematode resistance
6
Which nematode can cause stunting and galling of the root tips and vector the Grapevine Fanleaf Virus?
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The dagger nematode, Xiphinema index
The dagger nematode, Xiphinema americanum
The Ring nematodes, Mesocriconema xenoplax
Stubby root nematode, Paratrichodorus spp.
Pin Nematode, Paratylenchus hamatus
7
What stage in life is most susceptible to nematode attack?
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Vines in the ground for more than 5 years
Vines in the ground for 4-5 years
Vines in the ground for 2-3 years
Vines in the ground for less than 1 year
8
Where do Ectoparasitic nematodes live?
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In the soil profile
Inside the root system
Freely moving between the soil and the root system
Inside rotting tissue
9
What is the best way to describe the nematode resistance of the commonly used grape rootstocks?
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Most vines have good resistance against a broad range of nematodes
Most vines have broad resistance to Endoparasitic nematodes
Most vines have broad resistance to Ectoparasitic nematodes
With so many different types of nematodes and a large amount of diversity within each group, it's complicated
10
Where do Endoparasitic nematodes live?
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In the soil profile
Inside the root system
Freely moving between the soil and the root system
Inside rotting tissue
