34 ADVICE FOE FOEEST PLANTEBS IN OKLAHOMA. 



each instance intervals between the rows 4, -U-. and 6 feet are permis- 

 sible. As a rule, the wider spacing with continued cultivation is 

 advised, hut in some cases it may he best to set the trees closer. 



Diagram 0. — Mixture for <t windbreak on Jii</Ji prairies with a dense clay 



subsoil. 



A M A M 



L E L E 



A M A M 



L E L E 



A=Green ash. M=Russian mulberry. L=Black locust or honey locust. 

 E=White elm. 



BEQl li:i:i> mm m i: 01 i RE1 S PI R \( in . 



[f 



planted in 10 rows t !'«'<■' nparl : 



Ash _______ 



______ 716 





Mulberrv 



. __ _ TIC 





I.i >cus1 



c.l 1 





Elm 



04. 





Total _ - _ 







2,720 



If 



planted in 17 rows 1 ' feel a pari : 



\xh 



569 





Mulberrv 









506 





Elm 



.-DC, 





Total 







2, 150 



[f 



planted in 1-". rows l» feel apart : 

 _sb 



326 





Mulberrv 



:;_:<; 







279 





Elm 



279 









Total 1,210 



For high prairies, where a windbreak to protect the farmstead 

 from the north wind- is desirable, alternating rows of red cedar and 

 hackberry will serve the purpose admirably, if planted in accordance 

 with the following diagram : 



Diagram 10. — Mixture for a windbreak on <i liif/li prairie. 

 H H H H 



c c c c 



H H H H 



C c (' c 



H=Hackberry. C=Red eedar. 



