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MW Paper 1 > Rootstocks > Flashcards

Rootstocks Flashcards

1
Q

What is the phylloxera resistance for Riparia Gloire?

A

High.

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2
Q

In what vineyard environment might a viticulturist use Riparia Gloire?

A

Where ease of propagation and early maturation are required. Otherwise, has a high phylloxera resistance, but is sensitive to drought, wet soil and lime.

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3
Q

What is the vitis parentage of 5BB Kober

A

Berlandieri x Riparia

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4
Q

What type of scion is best for 5BB Kober, and what is it’s major disease propensity?

A

Best suited for high vigour scions such as Nebbiolo or Chardonnay, susceptible to phytophthora root rot.

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5
Q

What is the vitis parentage of Teleki 5C?

A

Berlandieri x Riparia.

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6
Q

What types of soils are best suited to Teleki 5C Nematode resistance?

A

Low Nitrogen, moist clays. Has medium nematode resistance.

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7
Q

Vitis parentage of 110R Richter.

A

Berlandieri x Rupestris.

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8
Q

What is the nematode resistance for 110R Richter?

A

Low.

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9
Q

What is the drought tolerance for 110R Richter?

A

High. Best suited to drought prone regions.

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10
Q

What are the wet soil / salinity / lime tolerances of 110R Richter?

A

Overall medium, well tolerated. Best adapted to hillside, acidic soils.

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11
Q

Vitis parentage of 1103 Paulsen.

A

Berlandieri x Rupestris.

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12
Q

What are the wet soil / salinity / lime tolerances of 1103 Paulsen?

A

Overall High. More sensitive to Lime.

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13
Q

Is 1103 Paulsen a good choice of rootstock for Nematode-prone soils?

A

It is not. In australia, it has performed poorly in soils with nematode populations.

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14
Q

What is the nematode resistance of Freedom rootstock?

A

High.

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15
Q

What are the characteristics of Freedom?

A

Best suited to sand / sandy loam, high vigour, high nutrient availability, easy to propagate. Sensitive to latent viruses.

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16
Q

What is the best rootstock for cold, damp soils with low nutrient availability?

A

1103 Paulsen. Medium to high tolerance of wet soils, has an ease of propagation and high tolerance of soil salinity, but has low nematode resistance.

17
Q

What is the best rootstock for drought-prone soils?

A

110R Richter or Salt Creek (Ramsay). Both have high tolerance of drought. Ramsay has high tolerance of nematodes, but is difficult to propagate and is tolerant to phytophthora.

18
Q

What is the vitis parentage of Ramsey Salt Creek?

A

Champinii

19
Q

Is Ramsey Salt Creek tolerant to drought?

A

Yes.

20
Q

What rootstocks are best suited to sand?

A

Ramsey Salt Creek, Freedom, Harmony.

21
Q

What are the main factors that influence the choice of rootstock?

A

Pesitlence, Water Availability/Drainage/Irrigation practices and Soil Chemistry.

22
Q

You’re a viticulturist planting a new vineyard in the Douro Valley. What rootstock would you use for a drought prone potential site that required a high vigour scion? Why?

A

140 Ruggeri. Has high drought tolerance coupled with high vigour, although is not easy to propagate.

23
Q

You’re a viticulturist planting a new vineyard in a wet hillside location in Chile. what rootstock would you use for deep, wet soils with no phylloxera risk? Why?

A

Teleki 5C. Low drought tolerance with medium to high tolerance of nematodes and a high performer on moist, clay soils that has a high ease of propagation.

Could also consider 039-16. Does well in the soil type, isn’t easy to propagate, but is resilient to fan leaf virus that plagues Chilean winegrowers.

24
Q

You’re a viticulturist planting a new vineyard in a highly irrigated region in the Riverland. What rootstock would you use and why?

A

1103P Paulsen. Very adaptive to saline soils (irrigation) and drought conditions, although only moderately vigorous and low resistance to nematodes.

25
Q

You’re a viticulturist planting a new vineyard that is unirrigated in the Rheingau to Riesling. What rootstock would you use and why?

A

Riesling is a low to moderate vigour scion, and the unirrigated low to moderate fertility of the soil requires a moderately vigorous rootstock to balance the vine, hence, 110R - which is suited to hillside, acidic soils.

26
Q

True or False:

Vines grafted to rootstocks are more susceptible to lime-induced chlorosis than ungrafted vines.

A

True.

27
Q

Which vitis parentage is most tolerant of high lime soils?

A

Berlandieri.

28
Q

What is the most lime tolerant rootstock according to Galet (1998)?

A

140 Ruggeri

29
Q

What are the two main nutrient considerations when choosing a rootstock? Do rootstocks generally assimilate N more efficiently than own rooted vines?

A

Nitrogen and Potassium are the most important and yes, rootstocks generally assimilate Nitrogen more efficiently than own rooted vines.

30
Q

What are the most used Berlandieri x Rupestris rootstocks?

A

Richter (99R/110R), 1103 Paulsen, 140 Ruggeri

31
Q

What are the most used Berlandieri x Riparia rootstocks?

A

SO4 Oppenheim, 5C Teleki, 5BB Kober

32
Q

What are the most used Riparia x Rupestris rootstocks?

A

3309 Couderc, Schwarzmann, 101-14

MW Paper 1 (2 decks)

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