Brown: Influence of Stock on Cion 



153 



UNION OF ALMOND AND PEACH 



This graft is 42 years old and seems to have stimulated both of the parents, since each of them 

 has attained a size which would hardly be expected if it were growing alone. The in- 

 creased vigor is seen not only in the size, but in the great longevity. Grafted trees are 

 frequently short-lived. (Fig. 2.) 



of union of the peach and almond. 

 The larger one (Fig. 2) measures 9' 1" 

 in circumference above the union and 

 10' 4" below. The second one (Fig. 3) 

 measured 6' 6" above and 9' 7" below, 

 making a difference of 3' 1" in cir- 

 cumference. In peculiar contrast to 

 the above the same orchard had four 

 rows on the west side grafted on plum 

 stock. These were presumably of the 

 same age, but were from one-quarter to 

 one-half smaller than those on peach 

 root. All but ten had died and been 

 removed while those still living were 

 sickly and contained many dead 

 branches. The plum stock was in 

 every case smaller than the part above 

 the union. Fig. 4 shows one of the 

 trees on pliun stock, which measured 

 four feet in circiunference below the 

 imion and 4' 10" above, a decided con- 

 trast to the peach stock. The same 



condition was also observed in other 

 old orchards of similar age. 



The union that the peach makes 

 with the almond is exceedingly strong, 

 and usually the peach remains sound 

 longer than the almond. Fig. 5 shows 

 a photograph of a vertical section cut 

 through the union. The line of growth 

 is straight across and very sharply 

 defined. 



The section in the center of the 

 picture is a cut through the union of an 

 English walnut and a black walnut, 

 differing from the almond illustration 

 in that the union was made by budding 

 instead of grafting. 



From these almond grafts, it will be 

 evident that grafting may increase the 

 size not only of one parent, but of both; 

 and in this case, it seems to have 

 resulted in increased longevity, as well. 



Another influence of stock over cion 



