Diseases

Question 1

What is Bordeaux Mixture?

Answer 1

Copper Sulfate, Water, and Lime mixture. Created to combat Downy Mildew in 1885

Question 2

Synonym for Powdery Mildew?

Answer 2

Oidium

Question 3

Synonym for Downy Mildew?

Answer 3

Peronospora

Question 4

What is Uncinula Necator commonly known as?

Answer 4

Powdery Mildew

Question 5

Which hit Europe first - Oidium or Peronospora?

Answer 5

Oidium in 1847. Peronospora in 1878

Question 6

What is Xyelella fastidiosa commonly known as?

Answer 6

The bacteria that causes Pierce’s Disease

Question 7

What variety of vines are resistant to Pierce’s Disease?

Answer 7

Muscadine

Question 8

Nepoviruses are spread by what vector?

Answer 8

Nematodes

Question 9

What is ‘indexing’ as it relates to viticulture?

Answer 9

Method of testing vines for virus and phytoplasma diseases by exposing sap from the plan to so-called indicator plants that will show typical symptoms via abrading leaves or grafting the two saps. This is being replaced by serological methods such as ELISA

Question 10

Mealy bugs have been confirmed as a vector for what disease?

Answer 10

Leafroll Virus, Corky Bark