7. Canopy Management Flashcards
What is vertical shoot positioning?
- most common type of trellising & most simple
- best suited to vines with low-moderate vigour
- called “Guyot” training when used on replacement cane pruned vines
What will determine the most appropriate training + trellising system?
1) the vigour of the vine
2) the topography of the site
3) the need for mechanization
What is the definition of yield?
A measure of amount of fruit being produced (can be measured per vine or over a set area)
What is the definition of vine density? What determines optimum density?
- the number of vines that are planted per hectare in the vineyard
- the optimum density is determined by vigour of the vine, type of trellising, and what access is needed between rows
What is the definition of cordon training?
Vine training done on vines with 1+ horizontal arms or “cordons” (usually spur pruned)
What are the aims of canopy management? (6)
1) maximize effectiveness of light interception by canopy
2) reduce shade within canopy
3) ensure microclimate for grapes is as uniform as possible
4) promote balance between vegetative + reproductive functions of vine
5) arrange vine canopy to ease in mechanization + manual labour
6) promote air circulation to reduce disease
What are some examples of summer pruning?
- shoot removal, shoot positioning, pinching, shoot trimming, leaf removal and crop thinning and green harvesting
What is the definition of head training?
Vine training done on vines with little permanent wood (can be either spur pruned or replacement cane pruned)
What is replacement cane pruning?
- canes are sections of 1 year old wood that have 8-20 buds
- typically laid down and need tying to a trellis
- number of buds will depend on vigour
What is spur pruning?
- spurs are short sections of 1 year old wood that have been cut back to 2-3 buds
- easier to carry out/can be mechanized
