Home
Flashcards
Preview
Viticulture 2 Test 2
Home
Get App
Take Quiz
Create
Crown Gall
Gall is a symptom of the disease.
Inhibits water sugar movement in plants.
Predisposes to winter injury and vine dieback.
Crown Gall Symptoms and management
Normally develop with wounds.
Use pathogen free rootstock.
Remove diseased vines
Try not to replant in that area
Nematodes
Cause hormonal imbalance in plants.
SOME MAY TRANSMIT VIRUSES
Check before planting.
Pierce's disease
Caused by xylem-limited bacterium
Transmitted by sharpshooters (a type of leafhopper)
Pierces disease control
Control leafhoppers
Eridicate infected plants
Eridicate alternate hosts
Leafroll
Red leaves
Downward rolling leaf
Transmitted by propagation
Fanleaf Virus
Leaf malformations
Yellow tent (looks like venial chlorosis)
Transmitted by dagger nematode
Powdery Mildew
Premature lead drop
Reduced yeild
Fruit infections
Fungicides: Strobilurons & DMI
Leafhoppers
Zic-Zac is common in Colorado
Anagrus epos is a species of fairyfly used as a control (parasitoid to leafhopper)
Sensitive to sulfur
Sensitive to insectides
Black Rot
Remove mummies to help prevent
Attacks both leaves and fruit
Vinifera susecptable
Botryis Bunch Rot
Favored in tight clusters of berries.
Likes rain later in the season
Can also be started by insect injury
Avoid wounding
Apply fungicide
Remove leaves around cluster
Author
Komatchi
ID
247473
Card Set
Viticulture 2 Test 2
Description
Viticulture
Updated
2013-11-18T19:14:22Z
Show Answers
Home
Flashcards
Preview