104 



FUNDAMENTALS OF FRUIT PRODUCTION 



decrease in the percentage of ash and an increase in the absolute amount. 

 The data in Table 9 illustrate these changes. The large increase in the 



Table 9. — Ash Content of Fruit'^'' 



Pear 



Apple 



ash content of the fruit affects the ash content of the spur on which the 

 fruit is borne. Figure 10 shows a rapid decrease in the percentage ash 



Fig. 10. — Ash content of apple spurs in percentages of dry weight; bearing spurs 

 represented by continuous lines marked W, B and / for Wealthy, Ben Davis and Jonathan 

 respectively; non-bearing spurs shown by broken lines marked J and B; barren spurs 

 represented by dot-dash lines marked B and A'' for Ben Davis and Nixonite. {After 

 Hooker.^oo) 



content of bearing spurs beginning the latter part of May or in June 

 and continuing until the fruit is picked. i"" In a summer apple Hke 

 Wealthy, the curve rises in September, the fruit having been picked in 



