Rupestris Group

RUPESTRIS DU LOT

Origin: France (Sijas – 1879).

VEGETATIVE FEATURES

Leaf: small, kidney-shaped, whole, with a very open brace-shaped petiolar sinus; the upper side is glossy and hairless; the lower side is hairless, and the flap is green, slightly bent, thick, with reddish ribs.

Woody shoot: short, not uniform, very branched, hairless, pruinose, reddish-purple.

CULTURAL APTITUDES

Ability to promote fruit setting:

good

Root system regeneration:

average

Adaptability to soil type:

compact: good
wet: very poor
dry: excellent
stony: excellent
acidic: poor
saline: good

Branching pattern of the roots:

taproot

Tendency to emission of suckers:

high

Susceptibility to deficiencies or excesses:

Carenza di N: molto sensibile
Carenza di K: sensibile
Carenza di Mg: molto sensibile
Carenza di P: molto sensibile
Carenza di Fe: sensibile

Resistance to root phylloxera:

excellent

Resistance to leaf phylloxera:

poor

Susceptibility to fungal and plant diseases:

downy mildew: low
powdery mildew: low
botrytis: sensitive
anthracnose: sensitive
melanosis: sensitive
eutypa disease: it reduces sensitivity
rachis desiccation: it induces sensitivity

OTHER INFORMATION

Behavior in the nursery:the rooting is good in combination with most vine varieties; it induces a considerable development to the scion; the production of roots comes easily.

Behavior in the propagation block: it is advisable to breed it on trellis due to the tendency to emit secondary branches.

Behavior in the open field: it induces considerable vigor; it enhances any predisposition to coulure and millerandage; it tends to delay the vegetative cycle and enhances the acidic component of the must; it is not subject to rapid decay despite being sensitive to fan leaf virus complex and rugose wood diseases; to be used in dry and shallow soils.