VITICULTURE/diseases & pests Flashcards
1
Q
Describe Esca?
A
*Fungal disease which attacks the trunk of the vine.
2
Q
Describe Millerandage?
A
*Another result of cold wet weather at flowering, causing poor fruit set.
3
Q
Describe Nematodes?
A
*Worms which feet on the roots of the vine, seriously damaging them.
4
Q
Describe powdery mildew?
A
*Attacks the green parts of the vine, and have powdery appearance
*Cause grapes to split and fall off, resulting in decreasing of yield.
5
Q
Describe downy mildew?
A
*Attacks the leaves and cause them to fall off,.
*This reduces the photosynthesis, causing late ripening, reduced yield and low sugar content.
6
Q
Describe Phylloxera?
A
*Originated in the USA, and recorded in Europe in 1863.
*Attacks the roots and kills vitis vinifera vines.
