Technical Sheet
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Berlandieri x Rupestris Group

775 Paulsen

Origin: Italy (Paulsen – 1894).

VEGETATIVE FEATURES

Leaf: medium-sized, kidney-shaped, whole, with a wide open V-shaped petiolar sinus; the upper side is glossy, with hairless dark green flap, bullous; the primary ribs are light green; the lower side is hairless, green-colored.
Woody shoot: long, branched, abundant development of secondary shoots, hairless, of gray-brown color, slightly pruinose.

CULTURAL APTITUDES

Ability to promote fruit setting:

acceptable

Root system regeneration:

medium

Adaptability to soil type:
  • compact: mediocre
  • wet: poor
  • dry: good
  • stony: good
  • acidic: poor
  • saline: acceptable
Branching pattern of the roots:

taproot

Tendency to emission of suckers:

high

Susceptibility to deficiencies or excesses:
  • deficiency of K: sensitive
  • deficiency of Fe: low sensitivity
  • deficiency of Mg: low sensitivity
  • deficiency of Zn: low sensitivity
Resistance to root phylloxera:

high

Resistance to leaf phylloxera:

low

Susceptibility to fungal and plant diseases:

downy mildew: low
powdery mildew: low
anthracnose: sensitive
eutypa disease: it induces sensitivity

OTHER INFORMATION

Behavior in the nursery: the rooting is good and constant; it benefits from mulching so to delay the rooting process.
Behavior in the propagation block: it doesn't show problems of sorts when cultivated sprawling on the ground, however, when grown on trellis, it shouldn't be repeatedly cleaned from secondary shoots so to preserve a thorough lignification.
Behavior in the open field: it induces good vigor; it is not suitable to dense rows; sucker management is crucial; it delays the vegetative cycle while keeping a quite acidic must; it needs a moderate fertility and access to water during the vegetative cycle.