Kersus grafted vines (25 pcs)

AUTHORIZED RETAILER 

Kersus grafted vines (25 pcs)

Graft carrier 1103P - K5BB - S04 - 140RU - 420A (Graft carrier available at the time will be sent)

White-berried variety obtained from a cross between SK-00-1/7 and Pinot Blanc

Use

For wine production. From a sensory standpoint, Kersus wine resembles Chardonnay with some notes of Pinot Grigio. The aromatic profile shows a high intensity of floral and citrus aromas that evolve into exotic fruit notes. The resulting wines are well-structured, characterized by intense fruity sensations and marked freshness. It is suitable for the production of wines intended for early consumption or with short ageing periods.

Ampelographic characteristics

Leaf
Medium-sized leaf, orbicular, with 1–3 lobes and a petiolar sinus in a U or V shape. Cluster medium to large, cylindrical, compact, with or without wings. Berry medium-small, spheroidal. Skin of medium thickness with medium bloom, green-golden in colour. Flesh soft, with a neutral flavour.

Shoot (observations on shoots 18–30 cm long)

• Apex opening (30–60 cm): fully open
• Distribution of anthocyanin pigmentation on prostrate hairs of the apex: absent
• Density of prostrate hairs on the apex: high
• Growth habit (before tying): semi-erect
• Colour of the dorsal side of internodes: green
• Colour of the ventral side of internodes: green
• Distribution of anthocyanin pigmentation on bud scales: absent

Tendrils

• Number of consecutive tendrils: 2 or fewer

Young leaf (first six leaves from the apex, at flowering)

• Colour of the upper side of the blade (4th leaf): green
• Density of prostrate hairs between main veins on the lower side of the blade (4th leaf): low

Adult leaf

• Blade size: medium
• Blade shape: orbicular
• Number of lobes: three
• Colour of the upper side of the blade: dark green
• Distribution of anthocyanin pigmentation on main veins of the upper side: absent
• Distribution of anthocyanin pigmentation on main veins of the lower side: absent
• Blade depressions: absent or very weak
• Undulation of the blade between main or secondary veins: present
• Blade profile in cross section: V-shaped
• Blistering of the upper side of the blade: medium to high
• Tooth shape: both sides convex
• Tooth length relative to width: short
• Degree of opening/overlapping of the petiolar sinus: closed
• Shape of the base of the petiolar sinus: V-shaped
• Base of the petiolar sinus delimited by veins: not delimited
• Density of prostrate hairs between main veins on the lower side of the blade: none or very low
• Density of prostrate hairs on the petiole: none or very low
• Density of erect hairs on the petiole: none or very low
• Depth of the upper lateral sinuses: absent or very shallow

Inflorescence

• Sexual organs: stamens and gynoecium fully developed
• Position of the first inflorescence: third and fourth node
• Number of inflorescences per shoot: 1.1 to 2

Cluster

• Length (excluding peduncle): medium
• Width: narrow
• Compactness: compact
• Length of the main cluster peduncle: very short to short
• Lignification of the peduncle: up to about half its length
• Shape: cylindrical
• Number of wings on the main cluster: 1–2

Berry

• Length: short
• Width: narrow
• Shape: spheroidal
• Skin colour: green-yellow
• Bloom: medium
• Skin thickness: medium to thick
• Hilum: apparent
• Intensity of anthocyanin pigmentation in the flesh: none or very weak
• Flesh consistency: soft
• Particular flavour: none
• Seed development: complete

Phenology

• Budbreak: 04/04
• Flowering: 02/06
• Veraison: 07/08
• Physiological ripening: 09/09

Yield data

• Actual fertility (no. inflorescences/shoot): 1.42
• Grape yield (g/vine) or kg per metre of cane or cordon: 3,467
• No. of clusters per vine (at harvest): 15.2
• Average cluster weight (g): 262.7
• Average berry weight (g): 1.57
• Pruning wood weight (g/vine) or kg/ha: 690
• Ravaz index: 5.02
• Must sugar content (°Brix): 21.1
• pH: 3.4
• Total acidity of must (as tartaric acid) (g/l): 6.57
• Malic acid (g/l): 1.89

Resistance (macroscopic aspects)

• To adverse environmental conditions: resistant to winter cold down to −20 °C.
• To pests and diseases: excellent resistance to downy mildew and good resistance to powdery mildew.

RULES TO PLANT A VINEYARD

1. PLOW

You must perform this operation always with dry soil
A) On arable land is generally sufficient to ripper + to plow
B) On planting soil is generally sufficient to plow with an escavator and to clean the old roots.
If the previous crop was a vineyard, it is a good idea to leave the soil fallow for at least three years (after plowing). This procedure represents a valid possibility of defence against soil nematodes.

2. SOIL FERTILIZATION

Use organics and if it is a reimplantation, use Calciumocyanamide.
This fertiliser has a protective effect on the soil and the crop, especially against fungi.

3.PROPAGATING GRAPE VINE CUTTINGS

The planting should be carried out in temperate soil. The grafting point should be 8-10 cm above ground. Avoid shaving the redices. As much as possible, put sand and/or peat in contact with the roots (the root fears asphyxiation, while it needs a micro-oxygenation). Never fertilize in a localized manner (near the roots). Never water the rooted cuttings before summer.

4.SPRING WORKS

When sprouting, the root apparatus must be heated as soon as possible. Work the soil repeatedly every 7/10 days at increasing depth (up to 20 cm), taking into account the moisture of the soil. When the apex of the bud starts to grow, it means that the root system is functioning. Only then can we stop watering the soil. Failure to grow due to access to water is often confused with a lack of water. This is why watering is used which is expensive, useless or even worse.

5.SPRING CURE

Protect vegetation from Peronospora. To each treatment add nitrogen (N) and iron (Fe) foliar fertilizer. Do not make any radical fertilization.

6.SUMMER CURE

Continue with the defense against Peronospora by suspending the addition of the foliar fertilizer. This defense should be reinforced in late summer and should be continued until vegetation growth stops.
The September/October blight is destructive, to the point of bringing death to the whole plant (if it has not lignified). The rooted vine lacks clusters, so lignification occurs at the end of the vegetative cycle.

7.TECHNICAL VISIT

If incomprehensible anomalies persist after this procedure, contact an agronomist or the VCR Technical Service promptly before carrying out arbitrary procedures which may be unsuitable, expensive and/or worsening.