Berlandieri x Rupestris Group

140RU

Origin: Italy (Ruggeri – 1897).

VEGETATIVE FEATURES

Leaf: medium-to-small, heart-shaped, whole, with a very open V-shaped petiolar sinus; the upper side is dark green, hairless; the lower side is bristled, with a smooth flap, slightly bent, the ribs are pink-colored at the base.

Woody shoot: long, branched, elastic, striped, hairless, brown-gray colored with dark brown stripes, dark-brown-purple nodes.

CULTURAL APTITUDES

Ability to promote fruit setting:

quick

Root system regeneration:

good

Adaptability to soil type:

compact: medium
wet: very low
dry: excellent
stony: excellent
acidic: good
saline: good

Branching pattern of the roots:

taproot

Tendency to emission of suckers:

medium

Susceptibility to deficiencies or excesses:

deficiency of K: poor sensitivity
deficiency of Fe: poor sensitivity
deficiency of Mg: sensitive
deficiency of Zn: sensitive
deficiency of P: poor sensitivity

Resistance to root phylloxera:

high

Resistance to leaf phylloxera:

good

Susceptibility to fungal and plant diseases:

downy mildew: low
powdery mildew: sensitive
anthracnose: sensitive
leaf spot: sensitive
eutypa disease: it induces sensitivity
rachis dessication: it induces a low sensitivity

OTHER INFORMATION

Behavior in the nursery: the rooting is poor in combination with most grape varieties and particularly for table ones; since the rooting is poor, it benefits from hormone treatments and mulching; it is advisable to delay the harvest of the cuttings, but proceed with the grafting process immediately after; it induces an overemphasized diametric development of the grafted scion.

Behavior in the propagation block: if it's grown on trellis, it is unlikely to develop problems of sorts, whereas in tempered and fresh climates, if it is grown sprawling on the ground, it is advisable to cultivate it on soils that get rapidly warm, provided they are not fertile and devoid of pebbles.

Behavior in the open field: it starts initially with a slow growth resumption, followed by a considerable vigor; it is not suitable to a very dense row plantation; it delays the vegetative cycle while keeping a good acidity in the grape must; in the varieties that are prone to coulure, the phenomenon is emphasized; it doesn't need much water during the vegetative cycle; it is advisable to avoid overly fresh and fertile soils; a thorough sucker management is very useful.