Technical Sheet

M1

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

VEGETATIVE FEATURES

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

Woody shoot: long, not very branched, not very developed secondary shoots, elastic, ribbed, hairless, partially pruinose, dark brown-gray in color.

CULTURAL APTITUDES

Ability to promote fruit setting:

poor

Root system regeneration:

slow

Adaptability to soil type:

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

Branching pattern of the roots:

expanded

Tendency to emission of suckers:

poor

Susceptibility to deficiencies or excesses:

deficiency of N: low sensitivity
deficiency of K: sensitive
deficiency of Mg: sensitive
deficiency of Zn: low sensitivity
deficiency of Fe: low sensitivity
deficiency of B: sensitive

Resistance to root phylloxera:

excellent

Resistance to leaf phylloxera:

sensitive

Susceptibility to fungal and plant diseases:

downy mildew: low
powdery mildew: low
anthracnose: sensitive
leaf spot: sensitive

OTHER INFORMATION

Behavior in the nursery: it has a slow vegetative growth and rooting capacity, though 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 delays lignification, it is suitable to being grown sprawling on the ground, but it guarantees medium-high yields whether grown sprawling or on trellises.

Behavior in the open field: the root system tends to develop within the first 40cm of soil; it well adapts to chlorosis inducing soils with a low salinity; it prefers deep and fresh soils. Limited production capacity and induced vigor; it favors the accumulation of sugars, anthocyanins and polyphenols.