Rootstocks and Clones - Rootstock 41B is the most popular rootstock in Champagne and 81% of the vines are grafted on it. The two other are S04 which thrives in limestone and 3309C. There are 50 different clones of Chardonnay, Pinot Noir and Meunier that are recommended by the CIVC. Pinot Noir and Meunier clones are bigger berried and Chardonnay clones are higher in acid than those used for still wine production. Some producers use the recommended clones and others use section massale to replant their vineyards, however old vine material does not guarantee quality. The CIVC recommended clones are Pinot Noir 115, 779 and 927; Chardonnay 75, 76 and 95; and Meunier 977, 900 and 817. Low yielding clones produce 14,000 - 15,000 kg/ha and steady yielding clones produce almost 20,000.