Vineyard Management Flashcards
(24 cards)
What is a trellising system?
A structure used to support grapevines, including posts, wires, and sometimes cross-arms.
Name 3 common trellising systems.
VSP (Vertical Shoot Positioning), Geneva Double Curtain, Lyre.
How does trellising influence yield?
By controlling vine vigor and shoot spacing, which affects cluster exposure and quantity.
How does trellising affect fruit quality?
Optimizes sun exposure and airflow, impacting ripeness, tannin development, and disease resistance.
What is the effect of VSP on quality?
Promotes good exposure and is suitable for moderate vigor sites—yields moderate, quality high.
How does Geneva Double Curtain affect yield?
High-yielding system ideal for vigorous sites, reduces shading and improves airflow.
What trellis system is suited for warm climates?
Lyre or divided canopy systems reduce shading and improve air circulation.
How do trellis systems relate to mechanization?
Certain systems (e.g., VSP) are more compatible with mechanical pruning and harvesting.
What is canopy management?
The manipulation of vine leaves and shoots to optimize light exposure, airflow, and disease control.
How can canopy management reduce sunburn?
By adjusting leaf coverage to protect clusters during heatwaves.
How does leaf removal help mitigate disease?
Improves airflow, reduces humidity around clusters, limiting mildew and botrytis.
What is shoot thinning and its benefit?
Removing excess shoots early to balance growth, enhance fruit quality, and reduce competition.
How can canopy management help in cool climates?
Opens the canopy to increase sunlight and promote ripening.
What is lateral shoot removal?
Eliminating non-fruit-bearing shoots to improve airflow and reduce shading.
How does canopy density influence transpiration?
Dense canopies increase humidity, while open canopies allow better temperature and water regulation.
What climate extremes can be mitigated by canopy control?
Heatwaves, excessive rainfall, early frost, and drought stress.
How does trellising affect disease control?
Improves air circulation and sunlight exposure, reducing conditions for mildew and botrytis.
What is the link between canopy structure and spray efficiency?
Open canopies allow better spray penetration, enhancing pest and disease control.
How do trellis systems support mechanization?
Enable mechanical pruning, shoot positioning, and harvesting—reducing labor costs.
What canopy trait favors disease suppression?
Uniform, moderately open canopy with good air movement and light penetration.
How can poor trellising increase disease risk?
Crowded shoots and poor airflow promote humid microclimates ideal for fungal growth.
What is the impact of shoot positioning?
Organizes growth for uniform light exposure, reduced shading, and easier disease management.
Name a system promoting vineyard efficiency.
Smart-Dyson or VSP—adaptable to mechanization and easier management.
How does vigor affect trellising and disease?
High vigor requires divided systems to prevent shading and disease proliferation.
