Grapevine trunk disease

Grapevine trunk disease (GTD) refers to a collection of diseases in grapevines, primarily caused by a complex of various pathogenic fungi that infect the wood of the vine. These diseases are considered a significant issue in vineyards worldwide, leading to reduced vineyard productivity and longevity.

Causes

The primary causes of GTD are a complex of various pathogenic fungi. These fungi infect the wood of the vine, causing a variety of symptoms and ultimately leading to the decline of the vine. The most common fungi associated with GTD include Phaeomoniella chlamydospora, Phaeoacremonium aleophilum, and species of Eutypa, Botryosphaeria, and Diplodia.

Symptoms

The symptoms of GTD can vary depending on the specific pathogen involved, but generally include a decline in vine vigor and productivity, dieback of shoots, and the presence of cankers or necrosis in the wood. In some cases, the disease can lead to the death of the vine.

Management

Management of GTD involves a combination of cultural practices and chemical treatments. Cultural practices include proper vineyard sanitation and the use of resistant grapevine varieties. Chemical treatments typically involve the use of fungicides, although their effectiveness can vary depending on the specific pathogen involved.

See also

• Viticulture
• Plant pathology
• Fungus

References

Grapevine trunk disease Resources
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