Fektilizing Self-Sterile Gkapes. 43 



A year ago the State Agricultural Experiment Station at 

 Geneva, N. Y., published Bulletin No. 157 on the " Self-fertility 

 of the Grape," in which each of the 169 cultivated American 

 varieties was classified according to its ability to set fruit of 

 itself. The following pages from this bulletin contain the classi- 

 fied lists just mentioned: 



In this classification the varieties are arranged in four classes, accord- 

 ing to the average character of the clusters which have developed from 

 covered blossoms on vines in apparently normal condition. In cases 

 where there is doubt as to whether the vine was in proper condition for 

 the test the name is followed by a question mark, to indicate that the 

 classification is doubtful. 



Class 1 includes varieties which when self-fertilized have formed none 

 but perfect clusters, and those with which the clusters have varied from 

 perfect to somewhat loose. 



Class 2 includes varieties which when self -fertilized have on the average 

 formed marketable, although not compact, clusters. 



Class 3 includes varieties which when self -fertilized have on the average 

 produced clusters too loose to be marketable. This class has a wide 

 range. It extends from the varieties in Class 2, with clusters not too 

 loose to be marketable, to Class 4 which includes the self-sterile sorts. 

 There are varieties in this class which have on the average produced self- 

 fertilized clusters nearly compact enough to be marketable, some being 

 compact but others being loose. At the lower limits of the class are found 

 varieties which usually fail to produce fruit on covered clusters but, which 

 have occasionally borne a few scattering fruits when the clusters are 

 covered. 



Class 4 includes those varieties which have not produced any fruit on 

 covered clusters. 



Classiflcation According to Self -Fertility. * 



Class 1. — Clusters Perfect or Varying from Perfect to 



Somewhat Loose. 



Ambrosia, Hopkins, Niagara, t 



Antoinette, Janesville, Opal, 



BerclunaDS, Lady Washington, Poughkeepsie, 



Bertha, Leavenworth, Pocklngton, 



Columbian Imperial, Lucile, Profitable, 



Cottage, Lutie.l- Prentiss, 



Croton, Mabel, Rochester, 



Delaware,! Marvin Seedling White, Rutland, 



Diamond, Mary Favorite, Senasqua, 



Diana, Mathilde, Shelby, 



Early Golden, Metternlch. Telegraph, 



Etta, Monroe, Winchell.f 



Herald, Moore's Early, Worden.f 



•This clasiflcatlon is here modified to include the changes which are necessitated by 

 the Investigations of 1899. 

 fPrevious records confirmed by 1899 tests. 



