D2 GRAPE' CULTURE AND 



one, there may be difficulty on account of the weak base of a 

 stouter trunk. But in the reverse case there is no trouble, 

 for a relatively stout base for a weak trunk is desirable. The 

 strong-growing Californica will, in its own home, furnish just 

 such a stock for all, or almost all, the Vinifera varieties, which 

 it exceeds in growth whenever planted in appropriate soils. 



In my personal experience with the Californica, I have 

 found only one variety which seems to exceed- it -a little in 

 growth when grafted, viz. : the Clairette Blanche, which is an 

 extraordinary grower. In the case of five other varieties 

 grafted in my vineyard (Black Burgundy, Palomino, Mon- 

 deuse, Verdelho, Cinsaut) the graft junction is at the end of 

 the season either straight (z. e. , a cylinder), or like a wine 

 bottle right side up, the Calif "omica stock, forming the body of 

 the bottle, the graft the neck. There can be no doubt that 

 in these cases the stock will push the growth of the grafted 

 variety. 



Where the same varieties have been grafted on \ht.Riparia 

 or Rupestris stock, the case is just the reverse. Here the 

 graft junction resembles a bottle placed neck down, and it is 

 at least questionable that the stock will be able to supply fully 

 the needs of the graft, and pretty certain that it will not tend 

 to push the latter beyond what its growth would be if on its 

 own root. In the case of the Rupestris and Clairette, the 

 disproportion is painful to contemplate, the quill-like stock 

 .appearing absurdly inadequate to the support of the graft that . 

 has swelled to the proportion of a man's thumb. That this 

 is felt by the stock is apparent from the frequency with which 

 the grafts have thrown out their own roots when on either 

 Rupestris or Riparia stock, thus defeating the primary object 

 of grafting at all. No such tendency is seen in the same 

 varieties where they are on the Californica stock. 



But this, it must be remembered,' happens on a soil pccu- 



