| Origin |
Riparia tomentosa x Rupestris Martin |
| Young Branch End |
Closed, low density of erect hairs. Medium, generalised anthocyanin pigmentation. |
| Young leaf |
Copper coloured. Low density of erect hairs on the lower page of the fourth expanded leaf. Medium anthocyanin pigmentation of the first six leaves. |
| Shoot |
Red nodes and internodes on the dorsal side and red striated on the ventral side. Low anthocyanin pigmentation of the buds. |
| Tendrils |
Short. Discontinuous regular distribution with 02 formula. |
| Flower |
Male. Characteristic aroma. |
| Adult leaf |
Cuneiform, small, whole. Medium green with low anthocyanin pigmentation in the main ribs. Lip blade, no blistering. Medium, convex teeth. Wide U-shaped petiolar sinus. In young leaves, the petiolar sinus is V-shaped with convex edges. Upper page with erect hairs on the main ribs. Low density of erect hairs on the lower page. Low density of erect hairs on the petiole. |
|
Circular, plain, redish brown. |
| Characteristics |
3309 C is a medium vigour rootstock that doesn’t delay the cycle of the grafted grape variety.
It is a medium producer of wood and its response to rooting is good.
It shows good results in local and hand grafting.
It bears only up to 11% active limestone and is sensitive to sodium chloride (it doesn’t bear more than 0.3g NaCl/Kg of earth).
This rootstock is sensitive to the Meloidogynae type of nematodes and to the gall form of phylloxera (which causes galls on leaves).
3309 C is very sensitive to drought, especially in areas of Mediterranean climate and under the influence of the hot winds from North Africa. Therefore, it is advisable to use it in fresh, fertile soils. |
Português