Abscission of Flowers and Fruits of the Apple 



6S 



portion of food and water, than flowers on spurs producing a smaller 

 number of blossoms? The data in table 17 contain an answer to this 



TABLE 17. Percentage of Flowers Developing into Fruits on Spurs with 



Varying Numbers of Flowers 



*After the first drop, 

 t After the June drop. 



question. The figures indicate that a higher percentage of flowers develop 

 into fruits on spurs producing six flowers than on spurs producing four 

 or five flowers. 



relation between length of spur growth made during preceding 

 season, and fruitfulness of the spur 



In 191 5 it was observed that many of the fruits were borne on spurs 

 which had elongated more than two centimeters during the previous season. 

 This fact was first noted in studying the set on Mr. F. W. Cornwall's 

 Baldwin orchard at Pultneyville, New York. All flower-bearing spurs 

 found on large branches from several trees were placed in t\/o groups. 

 The first group contained spurs that had made a growth of two centimeters 



TABLE 18. Set of Fruit in 1915 on Spurs Making Different Growth Lengths 



DURING the Preceding Year 



T79 



