12 



Farmers' Bulletin 1123. 



grove of trees. Accordingly, very close spacing can not be practiced 

 there unless irrigation is possible. 



The approximate spacing considered generally desirable for the 

 more promising species is shown in Table 4. To meet a specific condi- 

 tion of soil or climate, some other spacing may be better. Before 

 planting, it is advisable to write to the State forester concerning the 

 matter. 



TABLE 4. Spacing for forest trees. 



Table 5 shows the number of trees required to the acre for the 

 spacings given. 



TABLE 5. Trees required to the acre with spacing indicated. 



CARE OF PLANTATION. 

 CULTIVATION. 



Though cultivation is not absolutely essential in all cases, par- 

 ticularly on loose soils in the regions where hardwoods thrive natu- 

 rally, it is nearly always beneficial to a plantation, and especially so 

 during the first several years of its existence. Cultivation is essential 

 to success in regions of little rainfall where irrigation can not be 

 practiced and on areas heavily sodded with grass. A heavy sod 

 practically insures the failure of a young hardwood plantation. 

 Horse cultivation is entirely practicable. If desired, some agri- 

 cultural crop, such as potatoes, may be grown between the rows of 

 trees during the early period of the plantation's growth. Cultiva- 

 tion should be given two or three times a year. 



Forest trees are subject to damage by heavy frosts and, if they 

 are growing vigorously when these frosts occur, they may be severely 



