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15 Cards in this Set
- Front
- Back
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What are the benefits of using rootstock?
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-phylloxera resisance
– Nematode resistance – Drought tolerance – Tolerance to varying soil acidity and salinity – Influence scion vigor – Influence fruit set – Influence ripening rate |
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What are the characteristics of Vi#s riparia?
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• Widest ranging north American Vi#s species: Canada to Texas and the Atlan1c states to the Rockies
• Grows wild in riparian habitat, cool with a constant supply of water • Roots tend to grow parallel to the soil surface and as such it is suscep1ble to drought • Grows poorly in chalky soils • Sensi1ve to chalky soils • Vi#s riparia can tolerate wet/waterlogged soil • Has very high phylloxera resistance • Roots easily • GraOs well • Rootstock cul1var is Riparia Gloire de Montpellier |
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What are the characteristics of Vi#s Rupestris?
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• Common in soils of southwest Texas and north and east towards Pennsylvania
• Likes deep gravely/rocky soils with a penetrable subsoil • Moderate lime tolerance (less than berlandieri more than riparia) • Long vegeta1ve cycle • Roots and graOs well • Rootstock cul1var is St George du Lot |
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What are the characteristics of Vi#s berlandieri?
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• Na1ve to the Southwest US (limestone hills of Texas
• Successful in dry, calcareous soils • Thrives in infer1le soils • Very resistant to phylloxera • Difficult to root |
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What are the characteristics of V. Riparia × V. rupestris 101‐14?
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– Moderate yield in cool climates, higher in warmer areas
– Low vigor – Poor draught resistance – Low moderate resistance to alkaline soils – May advance ripening – May Improve fruitset |
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V. Riparia × V. rupestris Schwarzmann
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– Low‐moderate yields
– Low moderate vigor – Hig water requirements – High potassium uptake – Moderate lime tolerance – May advance ripening and fruitset |
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V. Riparia × V. rupestris 3309 Couderc
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– Moderate yields
– Low vigor – Drought sensi1ve – Moderate lime tolerance – Good in deep soils with a good water supply |
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V. Berlandieri × V. riparia SO4
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– High to moderate yields
– Moderate to high vigor – Performs poorly in drought condi1ons – Moderate to high lime tolerance – Can advance maturity and fruit set if vigor is managed – Slender trunk‐ breakage at graO with mechanical harvesters |
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V. Berlandieri × V. rupestris
• 1103 Paulsen |
– Moderate high yields – Moderate to high vigor – Deep growing roots – High drought tolerance – Moderate to high lime tolerance – Long vegeta1ve cycle which can delay maturity
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V. Berlandieri × V. rupestris
• 140 Ruggeri |
– Moderate high yields – Higer vigor than 1103 P – High lime tolerance – Long vegeta1ve cycle can delay ripening – Hardy stock good in drought condi1ons
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V. Berlandieri × V. rupestris
• 110 Richter |
– Moderate yield
– Moderate vigor – Very high drought tolerance – Moderate high lime tolerance – Long cycle can delay ripening – More suscep1ble to chlorosis with Syrah and Pinot noir, excellent with Grenache (Boursiquot 2009) |
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Vigor Ranking
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• From lowest vigor to highest vigor
– Riparia Gloire de Montpellier – 101‐14 – 3309 Couderc – SO4 – Rupestris du Lot, 110 Richter, 1103 Paulsen – 140 Ruggeri |
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Define Ampelography.
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Ampelography uses the obvious and minute differences between cul1vars to describe them so that they may be iden1fied
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What characterisitcs does ampleography examine?
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– Hairs
– Density of hairs – Colors of the organs – Shoot (dorsal and ventral side) – Shape of shoot 1p – Shape of mature leaf • Chordate, wedge, pentagonal, circular, kidney shape – Number of lobes on mature leaves |
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Grapevines are described by what characteristics?
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• Leaf texture • Leaf size • Shape of sinuses • Hairs on leaf • Teeth on edge of leaf • Berry shape • Shape of tendrils
also: • Shoot or Cane shape: smooth, ripped, grooved • Tendril distribu1on • Shoot altude: erect/upright, droopy, horizontal • Cluster density‐ 1ghtly packed, loose etc. |
