100 



PRixcrrr.Es and practjce of trunixg 



judicious, continuous good management. Whatever seri- 

 ously upsets tlie cquilUjrium sd establislied will almost surely 

 also upset the hearing hahit. In cases where the hearing 

 habit has ne\'er heen dcN^eloped, either due to neglect ' r 

 improper management, exi)eriment may enable the growcr 

 to disci )\'er a remedy such as giving a different type nf till- 



'^i^i 





FIG. 72 

 BRANCHES OF LOW-HEADED TREES TEND TO ASCEND AT ACUTE ANCLES 

 This drawing' from a photograph shows that trees started with low h^'ads hT\e 

 branches that approach the \ertical. Compare with high-headed trees f Figs. 3, 22. 23. 



age, a change of plant food, a better type of disease and 

 insect control or a more or less radically different style of 

 [jruning. 



A neglectefl orchard will furnish a typical case. .Su|ipose 

 the tillage, sjjraN'ing and other factors just mentioned to be 



