PRUNING 



65 



Worcester Pearmain, planted in 1905, were subjected from 1908 

 to 1914 to different branch treatment, gave further evidence of 

 a similar character, the results being measured by counting the 

 number of blossom trusses, so as to avoid the disturbing factor of 

 the destruction of the fruit by spring frosts. The results, omitting 

 two exceptional values of opposite characters, were 



No pruning . 

 Moderate pruning 

 Hard pruning . 



Blossom trusses. 

 1909-14. 



. 180 

 . 100 



52 



2OO 



CO 



Q. 



lOO 





FiG. 12. WEIGHT OF CROPS FROM TREES PRUNED TO 

 DIFFERENT EXTENTS. 



these values being very nearly in the same proportion as in 

 the previous experiments. 



A much more extensive series of records was presented by the 

 fruit crops from eight trees of each of 117 different varieties of 

 apples, half of them grown on the paradise stock, and half on the 

 crab. The trees had all received the same branch treatment till 

 1905, when this treatment was modified so that half of the trees 

 on either stock were pruned more severely than the others, 

 F 



