It is a well-known fact that grafting began as a defensive measure against phylloxera and has long since assumed the role of mediator between soil and climate and the characteristics of different varieties. To satisfy this specific requirement, Vivai Cooperativi Rauscedo assemble more than 700 different
variety/rootstock combinations annually in order to provide individual growers the product that best suits their business needs. It should be stressed that all the plantations destined for the production of rootstocks have been realized using clonal material of base category
predominately deriving from original VCR clones. This allows the supply of health-checked, safe and established products to the grower. Currently Vivai Cooperativi Rauscedo has the following rootstocks based on their distinctive features:
Legend: -- Insufficient - Low + Sufficient ++ Good +++ Very good ++++ Excellent:
BERLANDIERI X RIPARIA GROUP
Kober 5 BB: suitable for cooler environments and diverse soil compositions, ranging from heavy to light, or even stony as long as it not too calcareous. It is a vigorous plant that is perhaps not suited for overly fertile soil.
Approved clones: Kober 5 BB VCR 102, VCR 423, VCR 424.
S0 4: medium vigour rootstock which can even be placed in heavy soils provided they are not asphyctic or prone to chlorosis. This rootstock is not recommended for varieties which are susceptible to rachis desiccation and for terrains with unbalanced magnesium, potassium and calcium levels.
Approved clones: S0 4 VCR 105, ISV-VCR 4, ISV-VCR 6.
420A: moderate vigour rootstock suitable for dry environments and heavy soils, even slightly chlorosis-prone. While initial development is slow especially in colder terrain, it subsequently induces an excellent vegetative-productive balance.
Approved clones: 420A VCR 103.
161.49: limited vigour and discrete resistance to limestone allow for use in different environments, especially in medium and high density plantations. Positively influences the quality of the wines, particularly whites.
Approved clones: 161.49 VCR 112, VCR 123.
5 C: with characteristics quite similar to Kober 5 BB; it differs in its greater adaptation to poorer soils.
BERLANDIERI X RUPESTRIS GROUP
1103 P: : vigorous and elastic rootstock having a very high degree of grafting affinity with all varieties. It is drought resistant and suits almost any soil, even clay-calcareous ones.
Approved clones: 1103 P VCR 107, VCR 119, VCR 498, VCR 501.
110 R: suitable for harsher environments and soils not excessively calcareous, generally poor and dry. It is a typical rootstock for warm and dry environments.
Approved clones: 110 R VCR 114, VCR 418, VCR 424.
140 Ru: highly vigorous, high resistance to drought and calcareous soils. Not always able to induce the right growth-production balance in the vinifera mate, with a consequent decline in the quality of the grape.
Approved clones: 140 Ru VCR 120.
775 P: vigorous, suitable for not too heavy soils even if dry or moderately calcareous.
779 P: highly vigorous, rustic, adapts to poor and difficult soils. It has an excellent resistance to drought though it is less adaptable than 1103 P to calcareous soils. Is currently used little due to its less than optimal compatibility with many varieties.
Rupestris Du Lot: has good vigour and good resistance to active lime. Resistant to drought, but best not to use it in soils that are too compact.
Approved clones: Rupestris Du Lot VCR 109.
RIPARIA X RUPESTRIS GROUP
101.14: : induces an earlier ripening thanks to its short vegetative cycle and low vigour. Suitable for cool, moist and non-calcareous environments.
3309 C: weak in vigour, is well suited to medium-textured soils not chlorosis-prone and not dry. Its low vigour allows for good use in dense plantations destined for the production of high quality wines.
Schwarzmann: of sufficient vigour, it is also suitable for clayey soils and dry terrains. It is more rustic than 3309 C and 101.14.
Approved clones: Schwarzmann VCR 122.
VINIFERA X BERLANDIERI GROUP
196.17: has excellent vigour and a low resistance to active lime. It grows well in acidic, dry, stony, poor and even sandy soils.
Gravesac: has good vigour, weak resistance to calcareous soils but adapts very well to acidic soils.
41 B: has good strength and high resistance to calcareous soils, can be used in hot and chlorosis-prone environments or even in northern regions provided it isn't not in the presence of cold, heavy and asphyctic soils.
Approved clones: 41 B VCR 117.
Fercal: has a high resistance to calcareous soils, higher than that of 41 B and 140Ru. Vigorous, sensitive to magnesium deficiency and can be used in soils where the presence of active lime is hardly tolerated by other rootstocks.