74 INTERNATIONAL CONGRESS OF VITICULTURE 



In this list of best stocks 



St. George occurs 13 times Lenoir occurs 4 times 



Rip. gloire " 10 " Rup. Martin " 2 



1202 " 8 " AXR No. 9 " 2 " 



3309 " 7 " AXR No. 1 " 1 " 



3306 " 6 41 B 1 



C. Stocks Which Have Given Worst Nursery Results with Each Scion 

 (Omitting Berlandieri and Its Hybrids). 



% % % 



Beba 3306 22 Lenoir 25 1202 38 



Bouschet, All 3306 37 Rip. gloire 45 3309 50 



Corinth, Black 3306 30 



Corinth, White Rip. gloire 41 



Cornichon, Black..Lenoir A x R No. 1 15 101-14 30 



Emperor 101-14 30 Lenoir 35 3306 35 



Lagrain .Lenoir 27 Rip. gloire 42 



Malaga Rip. gloire 27 3309 27 Lenoir 30 



Mansenc, gros 3309 23 3306 35 1202 45 



Muscat Lenoir 48 



Palomino Lenoir 7 3306 40 



St. Macaire Lenoir 37 3309 48 



Semillon 1202 23 3306 35 St. George 47 



Sirah, petite Lenoir 50 



Sultana 3306 55 



Sultanina Rip. gloire 23 1202 46 101-14 46 



Tokay, flame Lenoir 37 1202 38 3306 42 



Valdepenas 3306 65 



In this list of worst stocks 



Lenoir occurs 10 times 3309 occurs 4 times 



3306 " 10 " 101-14 " 3 " 



1202 " 5 " AXR No. 1 " 1 " 



Rip. gloire " 5 " St. George " 1 



Table D giving a summary of columns 4, 5 and 6 of Table A, enables 

 us to compare the influence of the various stocks and scions on bearing. 

 Several interesting tendencies may be observed: 



1. Rip. x Rup. 3309 produced the largest crop, 80 per cent more than 

 the St. George, our most commonly used stock. Lenoir was no better than 

 St. George. The soil of the vineyard is a deep, rich loam with sufficient 

 moisture and suitable for all the stocks tested. As this is the first crop, the 

 small crop of the St. George may simply indicate greater slowness in reach- 

 ing full bearing. The Mourvedre x Rup. 1202, however, which is supposed to 

 have this defect, did much better. 



2. There was little difference in the time of ripening or in the composi- 

 tion of the grapes on the various stocks. 



3. All varieties showed earlier ripening and more sugar when grafted 

 than when growing on their own roots, wherever the comparison could be 

 made. On the average, the increase of sugar was over 20 per cent. With the 

 Muscat, it amounted to over 36 per cent, which would represent a consider- 

 able increase of crop of raisins, if the weight of the fresh grapes was the 

 same. 



D. Summary of Crop and Composition of Grapes on Grafted Vines. 

 Blocks "E" and "F" Davis. 



