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~General Wine > Vine Diseases > Flashcards

Vine Diseases Flashcards

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1
Q

Types of Vine Disease

A

Weather Affected

Fungal

Viral

Bacterial

Pests

Phytoplasma Disease

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2
Q

Powdery Mildew

A

Fungal

(Uncilula Necator)

Attacks the green parts of the vine.

Looks like white powder.

Casues grapes to fall off and others not to ripen.

AKA:
Oidium Tuckerii

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3
Q

Black Rot

A

Fungal

(Guignardia Bidwelli)

Causes black spots on:

  • vines
  • shoots
  • fruit

Reduced yield can be substantial

Native to North America but has spread.

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4
Q

Bunch Rot

A

Fungal

Is actually a collection of different rots.

Botrytis Cinera is among them.

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5
Q

Peronospera

A

Fungal

(Plasmopara Viticola)

Attacks the green parts of the vine, especially the leaves.

Causes leaves to fall off, thus reducing photosynthesis.

AKA:
Downy Mildew

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6
Q

Grey Rot

A

Fungal

Breaks the skin of grapes. Allows them to rot from the inside out

Part of the Bunch Rot family of rots.

AKA:
Botrytis Cinera
Noble Rot

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7
Q

Apoplexy

A

Fungal

Affects the wood of the vines; causes rot from the inside.

Incurable.

AKA:
Black Measles
Esca

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8
Q

Eutypia
Eutpya
Eutipose

A

Fungal

(Eutypa Lata)

Affects the wood of the vine causing vine death.

Incurable.

AKA:
Dead Arm

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9
Q

Leaf Roll

A

Viral

Spread by Mealy Bug & Infected Cuttings.

Decreased yield

Delay in ripening

Reduced quality

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10
Q

Coulure

A

Weather Affected

Non-Pollination of some of the blossoms.

Grapes fall off or never develop.

Caused by cold or wet weather at flowering.

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11
Q

Crown Gall

A

Bacterial

(Agrobacterium Tumefaciens)

Tumors form inside the vine.

They literally strangle it from the inside.

Thrive in cold weather.

AKA:
Black Knot

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12
Q

Dead Arm Disease

A

Fungal

(Eutypa Lata)

Affects the wood of the vine causing vine death.

Incurable.

AKA:
Eutypa
Eutypia
Eutipose

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13
Q

Pierce’s Disease

A

Bacterial

(Xylella Fastidiousa)

Restricts the vines ability to draw water.

Kills vines.

Incurable.

Spread by the glassy winged sharpshooter.

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14
Q

Phyloxera Vastastrix

A

Pest

Small aphid-like bug.

Attacks the roots and kills the vines.

Does not do well in slaty or sandy soils:

  • Germany
  • Colares
  • Priorat
  • Eastern Washington

AKA:
Root Louse

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15
Q

Esca

A

Fungal

Affects the wood; Causes rot from the inside.

Incurable

AKA:
Black Measles
Apoplexy

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16
Q

Flavesence Doree

A

Phytoplasma Disease

Delays budding and slows shoot growth.

Spread by leaf-hopping insects

17
Q

Botrytis Cinera

A

Fungal

Breaks the skin of grapes. Allows them to rot from the inside out.

Part of the Bunch Rot family of rots.

AKA:
Grey Rot
Noble Rot

18
Q

Nematodes

A

Pests

Minute round worms

They eat the roots causing serious damage and spread disease.

19
Q

Black Knot

A

Bacterial

(Agrobacterium Tumefaciens)

Tumors form inside the vine.

They literally strangle it from the inside.

Thrive in cold weather.

AKA:
Crown Gall

20
Q

Oidium Tuckerii

A

Fungal

(Uncilula Necator)

Attacks the green parts of the vine.

Looks like white powder.

Casues grapes to fall off and others not to ripen.

AKA:
Powdery Mildew

21
Q

Downy Mildew

A

Fungal

(Plasmopara Viticola)

Attacks the green parts of the vine, especially the leaves.

Causes leaves to fall off reducing photosynthesis.

AKA:
Peronospera

22
Q

Fanleaf

A

Viral

Leaves and shoots become deformed.

Serious yield reduction.

23
Q

Bacterial Blight

A

Bacterial

(Xanthomonas Ampelina)

Kills youg grapevine shoots.

They develop brown streaks in early Spring.

Can be controlled wth copper sprays.

24
Q

Millerandage

A

Weather Affected

Caused by cold or wet weather at flowering.

Uneven fruit-set.

Uneven grape sizes.

Common in:
Grenache
Zinfandel

aka:
Shattering

25
Q

Black Measles

A

Fungal

Affects the wood. Causes rot from the inside.

Incurable.

AKA:
Esca
Apoplexy

26
Q

Difference between Millerandage and Coulure?

A

Millerandage is due to rain/cold weather at flowering time. This creates imperfect fertilization.

Colulure is a physicialogical disorder. It happens after budbreak, and the berries do not form.

27
Q

What is

Uncilula Necator?

A

Powdery Mildew

Fungal Disease

Attacks the green parts of the vine.
Looks like white powder.

Casues grapes to fall off and others not to ripen.

AKA:
Oidium Tuckerii

28
Q

What is

Guignardia Bidwelli?

A

Black Rot

Fungal Disease

Causes black spots on:
vines, shoots, and fruit

Reduced yield can be substantial

Native to North America but has spread.

29
Q

What is

Plasmopara Viticola?

A

Peronospera

Fungal Disease

Attacks the green parts of the vine,
especially the leaves.

Causes leaves to fall off reducing photosynthesis.

AKA:
Downy Mildew

30
Q

What is

Eutypa Lata?

A

Eutypia

Fungal Disease

Affects the wood of the vine causing vine death.
Incurable.

AKA:
Eutypa
Eutipose
Dead Arm

31
Q

What is

Xylella Fastidiousa?

A

Pierce’s Disease

Bacterial Disease

Restricts the vines ability to draw water.
Kills vines.
Incurable.

Spread by the glassy winged sharpshooter.

32
Q

What is

Agrobacterium Tumefaciens?

A

Black Knot

Bacterial Disease

Tumors form inside the vine.
They literally strangle it from the inside.

Thrive in cold weather.

AKA:
Crown Gall

33
Q

What is

Xanthomonas Ampelina?

A

Bacterial Disease

AKA: Bacterial Blight

Kills youg grapevie shoots.
They develop brown streaks in early Spring.

Can be controlled wth copper sprays.

~General Wine (5 decks)

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