160 



Peach-Growing 



the amounts removed were quite uniform in the different 

 years, the notable exceptions being in 1901 when for some 

 reason there was nearly double the twig growth made in 

 any other year, and in 1904 when there was no crop. 



Table VII. — Estimated amounts of plant-food removed an- 

 nually DURING TEN YEARS BY THE TREE ANALYZED, THE 

 LENGTH OP THE ANNUAL TWIG GROWTH, AND THE ESTIMATED 

 . PLANT-FOOD DEMAND PER ACRE 



There is of course no direct means of determining how 

 much plant-food is required for the annual increase in size 

 of the trunk and limbs two years and more old. It is doubt- 

 less relatively small, since the analyses made of the tree show 

 that the new twig growth is very much richer in plant-food 



