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Canopy Management

Canopy Management. Describe how canopy management practices improve grapevine physiology Range: leaf removal, shoot thinning, water management, pruning, trimming/topping. Canopy Management. Shoot positioning Not common in the hot climates

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Canopy Management

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  1. Canopy Management Describe how canopy management practices improve grapevine physiology Range: leaf removal, shoot thinning, water management, pruning, trimming/topping

  2. Canopy Management • Shoot positioning • Not common in the hot climates • Very common in cool-climate areas of new Zealand and Europe

  3. Canopy Management • Shoot trimming • All modern shoot positioned trellises benefit by being trimmed at their sides and tops

  4. Canopy Management • Allows light penetration into the canopy and onto the fruit • It is important that the shoots are trimmed no shorter than 10-15 nodes long • This will ensure that there are adequate mature leaves to ripen the fruit produced at the shoot bases

  5. Canopy Management • Shoot removal • Removal of unfruitful 'watershoots' • And thinning out of fruitful shoots to 15 shoots per metre per canopy

  6. Canopy Management • Leaf removal (leaf plucking) • Removal of leaves shading fruit within the fruiting zone can greatly benefit fruit exposure and thus fruit composition/quality • Can be done by hand or by machine or combination of both

  7. Canopy Management • Fruit thinning •  The fruit thinning/removal operation is being practiced on a much wider scale • Brings the fruit load back to a level that the plant can adequately ripen • The fruit thinning operation is usually carried out at the start of veraison • Less mature fruit can easily be selected

  8. Canopy Management • Trellis design/modification • Low capacity vines/low potential sites require only simple trellis systems such as VSP • The vine capacity/site potential increases, so does the requirement for a more complex and larger trellis system

  9. Canopy Management • The root system can reflect what is happening above • A vines capacity is influenced by its root system

  10. Canopy Management • Too much water can increase vigour • Removing water form the root zone can reduce vigour • Field drains and deep ripping are techniques commonly used

  11. Canopy Management • Irrigation • Can control vigour • Supplying enough water to vines will keep them actively photosynthesizing and in balance • Stressing vines through lack of water will not improve wine quality

  12. Canopy Management • Competing plants • Can compete for nutrients such as nitrogen • Can compete for water • Can improve nutrient and soil availability in poor soils • Many other advantages to cover cropping

  13. Canopy Management • Soil nutrient management • In free draining soils nutrient management is essential • Small frequent amounts of fertiliser can be applied through the drip irrigation system

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