Grape Vine Training Systems Flashcards
What is a grape vine training system?
the criteria that contribute to grapevine and vineyard architecture and include:
planting density and geometry
pruning vines and bud numbers
trunk height
trellising system and canopy management
What are the current research topics concerning grapevine training systems?
reduction of inputs
dieback diseases
climate change adaptation
adaptation to the wine market
How can you decide on a training system?
Consider wine style and market price
Consider quality and quantity
What types of vineyards are there?
artisinal vineyard
industrial vineyard
traditional vineyard
new vineyard
Which 2 factors influence photosynthesis?
the plant and the environment
What is the purpose of photosynthesis?
plant growth, grape maturation, storage of starch
What are the characteristics of environment factors in photosynthesis?
radiation (between 0.3 and 0.7 nm), temperature (25-30˚C), water supply
What are the characteristics of plant factors in photosynthesis
age and sort of leaves
location of leaves
At what temperature is there no photosynthesis?
if T > 40-42˚C
What does the vine do when there is low water supply?
They close their stomata which decreases CO2 assimilation and photosynthesis. (consider isotopic discrimination of C13)
Are there different sensitivities to water supply in grape vines?
yes;
A variety that closes it’s stomata might last longer because it is preserving it’s water
What is optimal potential for photosynthesis?
100 days
What has more photosynthesis potential? Primary leaves or Secondary leaves?
Secondary
New leaves are more active than old leaves.
What does the first layer do to radiation?
It stops radiation
Why are the inner leaves less photosynthetic?
they are shaded and receive less radiation
