1- Vineyard Patterns: 41 B

It is one of the classic patterns , due to its great adaptation to limestone soils . Today it is being replaced by RU 140. It is a good rootstock for virgin soils.

2- Usual name

41 B

3- Obtentores

Alexis Millardet and Charles Grasset

4- Year of obtaining


5- Resistance to soil parasites

The tolerance degree of 41 B to root phylloxera ranges from medium to high.

In certain places it is sensitive to the nematodes Meloidogyne incognita, Meloidogyne arenaria and Meloidogyne hapla and appears sensitive to Agrobacterium vitis.

6- Adaptation to the environment

41 B is characterized by its adaptation to calcareous soils and its resistance to chlorosis.

  • Resists up to 60% total limestone and up to 40% active limestone. CPI 60.
  • It absorbs magnesium well from the soil.
  • It has a medium vigor and its root system is composed of thick, few and fleshy roots.
  • It is sensitive to excess moisture in the subsoil in spring and its resistance to drought is medium-high.
  • It is poorly adapted to very compact soils. 

7- Interaction with the variety and production objectives

  • The vigor that 41 B transfers to the grafts is medium-strong.
  • It has a very good affinity with most varieties.
  • At times it has presented affinity problems with Merlot and Pinot Noir, although it continues to graft a lot with these varieties.
  • The start of the plantation is quite slow. Presents latitude in the first years , but once anchored in the field it induces a great production.
  • The 41 B favors the compactness of the grapes.
  • It has a tendency to delay the vegetative cycle and compared to other rootstocks, the grapes obtained are rich in sugars and slightly more acidic. 

Dr. Sofia Seccombe

My name is Dr. Sofia Seccombe, and in this small section, I want to tell you who I am and why I started this project. I don't want to bore you, but I consider that it is an important part of godlywine. It serves as an exercise in transparency so that the person who reads the articles can be sure that the information is reliable.

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