Abscission of Flowers and Fruits of the Apple 



53 



The figures are based on counts of all flower-bearing spurs found on a 

 number of different branches taken from one or more trees of each variety. 

 The branches used were similar to those already described. 



It is seen from the table that in some varieties practically all spurs 

 set fruit, while in others almost half of the flower-bearing spurs fail to 

 set fruit. 



Variations in percentage of spurs setting Jniit after the first drop. — The 

 variations found in different branches, in the percentage of spurs that 

 set fruit after the first drop, are shown in table 3. Most of the branches 

 were about one and one-half to two centimeters in diameter at the base, 

 and the wood was from one to at least five years old. Only healthy and 

 apparently normal branches were considered. 



TABLE 3. Variations in the Percentage of Flower-bearing Spurs That 



Set Fruit after the First Drop 



167 



