Climate, Varieties & Rootstocks
This climate parameter measures daily heat accumulation and is often used to classify wine regions.
What are Growing Degree Days (GDDs)?
This particle is the largest and has the fastest drainage.
What is sand?
This perennial structure stores carbohydrates to support budbreak.
What is the trunk (or permanent wood)?
Before ordering plants, a grower should always perform this test on the site.
What is a soil test?
This insect is the vector of Grapevine Leafroll virus
What is the mealybug?
Producing new plants from parts like stems, roots, or leaves of a single parent plant, creating genetically identical clones
What is vegetative propagation?
These two micronutrient deficiencies are often confused and can manifest as poor set, zigzagging shoots and mottled leaves.
What are boron and zinc deficiencies?
These act as solar panels for the vine. Their shape indicates the variety and their color can indicate nutrition, water status, and disease presence.
What are leaves?
These support structures must be installed before planting and typically include end posts and line posts.
What is the trellis system?
“Cultural controls” in IPM refer to practices like these two examples.
Canopy management and sanitation
Regions with fewer than ~2,500 GDDs (°F scale) are typically classified as this.
What is a cool climate region?
The ideal soil pH range for grapevine nutrient uptake.
What is 5.5–7.0?
The training system famous in Burgundy and Oregon for Pinot Noir.
What is VSP?
This system provides precise water management, essential in regions with limited rainfall.
What is drip irrigation?
This fungal disease is characterized by gray fuzzy spores on fruit and thrives in humid, shaded canopies.
What is Botrytis?
This is the genus and species of the European grapevine that is used for wine production worldwide.
What is Vitis vinifera?
A vineyard showing poor shoot growth, pale leaves, and small clusters may be deficient in this nutrient essential for amino acids and proteins.
What is nitrogen?
This term describes when the vine produces too many shoots and clusters relative to its vigor.
What is overcropping?
This practice removes competition from grasses around young vines.
What is weed control or vine row herbicide strip?
This farming system integrates farming practices with the lunar calendar and specific composting and tea preparations.
What is biodynamics?
The art and science of improving the genetic traits of plants to create new varieties with desired characteristics that benefit humans
What is grape breeding?
This soil characteristic affects the amount of water the soil can hold, the rate of water movement through the soil, and how workable and fertile the soil is.
What is texture?
Crop estimation takes place in this stage of grape berry development.
What is Stage II: lag phase?
Name three criteria that make a site suitable for a premium vineyard.
Possible answers: good drainage, appropriate climate, frost protection, moderate fertility, slope, aspect, etc.
This disease requires both free water and warmth and is characterized by fungal spores on the undersides of leaves.
What is downy mildew?