1. 3309 C
2. 420A
3. Riparia gloria
4. 101-14
Characteristics of the rootstocks:
Rootstock | Resistance to chalk/ limestone [%] | Strength of growth | Effect on the vegetative cycle | Notes |
3309 C | to 10 | Weak (to Medium) | Advancing | Rootstock with a regular fruitfulness and advances maturation. Sensitive to nematodes. |
420A | to 40 | Weak (to Medium) | Advancing | It is used more and more for the production of high-class wines, in particular in Burgundy. |
Riparia Gloire | to 5 | Weak | Advancing | Rootstock with low vigour, not for chalk/limestone. For vines with high density of planting; early maturation, mainly used for the production of top-of-range wines. |
101-14 | to 10 | Weak | – | Widely used in USA. More vigorous than 3309C when planted in fertile soil with ample water. |