HULLETIN 197. GRAPE CULTURE IN CALIFORNIA. 129 



EXPERIENCE OF GROWERS. WINE GRAPES. 



An attempt has been made to collect the experience with various 

 resistant vines of growers in various sections. The experience of the 

 older vineyards is of little use, and, in fact, apt to be misleading, as 

 they were nearly all grafted on unselected Riparia and Rupestris. The 

 stocks in the newer resistant' vineyards are nearly all Rupestris St. 

 George and Lenoir, so that the data for comparison are meagre. Some 

 of the reports received, however, are interesting and are given here. 



NAPA COUNTY. 



B. Bruck, St. Helena. 



Vigor. Crop. 



Zinfandel on St. George, 7 years old, red, clay, hill soil ...Good Fair 



Zinfandel on Lenoir, 8 years old, red, clay, hill soil Good Fair 



Burger on St. George, 9 years old, rich, dry soil Good Large 



Palomino on Lenoir, 9 years old, rich loam i Good Good 



Carignane on Lenoir, 8 years old, rich loam Fine Fine 



Sauvignon vert on Riparia, 14 years old, rich loam__ __Fine Fine 



Sauvignon vert on St. George, 5 years old, rich loam Fine Fair 



Johannisberger on Riparia, 10-14 years old, loamy soil Fine Fair 



Johannisberger on St. George, 6 years old Strong Poor 



Tokay on St. George, 7 years old, heavy soil Good Fair 



Tokay on Lenoir, 8 years old, gravelly soil ..Fair Fair 



Muscat on Lenoir, 8 years old, dry, gravelly Weak Good 



The vineyard to which these notes refer is the same as that in which 

 the experiment plot, reported on above, is situated. The results cor- 

 roborate these of the plot. The crops of varieties grafted on St. George 

 vary from poor to fair, with the exception of the Burger, whose natural 

 tendency to heavy bearing has here been retained when grafted on 

 St. George. 



J. H. Wheeler, St. Helena. 



Zinfandel on St. George, 1-8 years old .-Vigorous and satisfactory. 



Zinfandel on Lenoir, 1-18 years old Vigorous and satisfactory. 



Zinfandel on Riparia -.Poor, gradually dying. 



Burger on Lenoir, 1-12 years old --Very vigorous, good crops. 



Muscat on Lenoir, 10 years old --Fair. 



Mr. Wheeler states that all varieties grafted on Lenoir yield about 

 one half the crop which they formerly did when growing on their own 

 roots, but that the crops are regular. The same varieties grafted on 

 St. George yield from one half to two thirds the crops formerly obtained 

 before the advent of Phylloxera. This report is sufficient to condemn 

 both stocks for this vineyard, as the experience in Europe is that 

 whenever a stock suitable to the variety of scion and the nature of 

 climate and soil is used, the crop of grafted vines is always larger than 

 that of vines on their own roots. There can be little doubt that the 

 Riparia X Rupestris hybrids would give better results in this vineyard. 

 2 BUL. 197 



