Technical Sheet

M3

Origin: Italy (Università degli Studi di Milano [DiSAA]1986).

VEGETATIVE FEATURES

Leaf: large, wedge-shaped, whole, slightly three-lobed, with an open V-U petiolar sinus;
the upper side is hairless, and the flap is bullous, dark-green-colored, opaque; the lower side is bristly and green,
with light-green ribs.

Woody shoot: long, branched, elastic, with prominent development of secondary shoots, hairless, uniform, red-purple in color.

CULTURAL APTITUDES

Ability to promote fruit setting:

slow

Root system regeneration:

slow

Adaptability to soil type:

compact: acceptable
wet: poor
dry: poor
stony: poor
acidic: poor
saline: acceptable

Branching pattern of the roots:

expanded

Tendency to emission of suckers:

very poor

Susceptibility to deficiencies or excesses:

deficiency of K: low sensitivity
deficiency of Mg: sensitive
deficiency of Mn: low sensitivity
deficiency of Fe: low sensitivity
deficiency of B: low sensitivity

Resistance to root phylloxera:

good

Resistance to leaf phylloxera:

everage

Susceptibility to fungal and plant diseases:

downy mildew: low
powdery mildew: low
anthracnose: very sensitive

OTHER INFORMATION

Behavior in the nursery: slow/moderate growth resumption and rooting capacity, it tends to develop a consistent quantity of fasciculate, crown-shaped roots. In the nursery it guarantees a medium-high yield.

Behavior in the propagation block: it anticipates lignification, it develops tendentially thin branches, it guarantees average yields both when raised sprawling on the ground and on trellis.

Behavior in the open field: it contains vigor and productivity and anticipates ripening; it promotes the accumulation of sugars, anthocyanins and polyphenols. It requires clayey soils, provided they are not subject to long-lasting drought.