The vineyard’s success depends on the choice of the stock.
	Varieties	Resistance to active calcium	Adaptibility to different soils and characteristics
	Rupestris du Lot	14%	Siliceous soils, sturdy, doesn’t like dry and humid l land
	Riparia Gloire de Montpellier	8%	Fresh and alluvion-rich soils, phylloxera resistant Doesn’t like dryness
	Couderc 3.309	12%	Granitic soil, strong phylloxera resistance
	101-14 Millardet et de Grasset	14%	Humid soils
	44- 53 Malegue	9-10%	Dry soils, magnesia deficiency
	196-17 Castel	6%	Resistant to dryness, salt, acid and sandy soils
	99 Richter	17%	Phylloxera and nematode resistant
	110 Richter	17%	Sturdy, resistance to nematode and dryness
	1003 Paulsen	17-18%	Sturdy, chalky-clay soils, salt resistant
	140 Rugieri	32%	Rustic and sturdy, dry soils
	S04	17-18%	Rich and humid land, nematode resistant
	420A Millardet et de Grasset	20%	Phylloxera and nematode resistant, poor soils
	161- 49 Couderc	25%	Phylloxera resistant, fresh soils
	5BB	20%	Northern flat landscape
	5C	20%	Rich and humid soils, nematode resistant
	RSB1	20-22%	Very sturdy, identical to 5BB, resistant to dryness
	41B Millardet et de Grasset	40% et +	Dry and chalky soils
	Fercal	40-45% et +	Phylloxera and nematode resistant, sensitive to magnesia deficiency
	1616 Couderc	11%	Resistant to salt, to nematode and phylloxera
	Gravesac (C.161- 49 x C.3.309)	20%	Good development in sandy-gravel, slightly acid soils. Very good resistance to phylloxera