Abscission of Flowers and Fruits of the Apple 



59 



TABLE 9. Percentage of Spurs Setting Fruit on Weak and on Vigorous 



Limbs 



The percentage of flower-bearing spurs that set fruit was greater on 

 the branches with large leaves than on those with small leaves. The same 

 condition prevailed on the other limbs that had been labeled, as was 

 determined by careful inspection. These results can probably be explained 

 on the basis of data presented later in these pages. 



SET OF FRUIT AS INFLUENCED BY THE LOCATION OF THE SPUR ON THE 



TWIG GROWTH OF DIFFERENT YEARS 



Observations were made to determine whether flower-bearing spurs 

 ai;ising from wood of different ages would be more likely to set fruit 

 in some cases than in others. Data regarding this point are given in 

 tables 10, II, 12, and 13. These figures were obtained during the summer 



TABLE 10. Percentage of Flowers Developing into Fruits after the First 

 Drop, on Spurs Arising from Wood of Different Ages 



of 191 5, hence the spurs on 19 14 twig growth came from lateral buds. 

 Ordinarily, few lateral buds form blossoms in New York State, and such 

 formation may be ascribed to the unusually favorable conditions for 

 fruit -bud formation which prevailed during 1914 — a wet spring followed 



^73 



