2- Usual name of the rootstock:
4- Year of obtaining
5- Genetic origin
It comes from the cross between the grape varieties of Vitis berlandieri cv Vitis riparia.
6- Resistance to soil parasites
The rootstock 34 EM offers a high degree of tolerance to root phylloxera .
This is resistant to some nematodes such as Meloidogyne incognita but is more resistant to the nematodes Meloidogyne arenaria.
7- Adaptation of the rootstock to the environment
The 34 EM rootstock is resistant up to 20% active limestone and an IPC of 40.
The resistance to iron chlorosis can be considered between medium and high.
8- Interaction with the variety and production objectives
The vigor transmitted by the rootstock is important.
The rootstock has an early vegetative cycle that can be interesting for northern viticulture or table grapes.
The clones selected in the viticulture of the 34 EM standard are 1032 and 1033.