SHELTER-BELT DEMONSTBATIOlSrS ON THE GREAT PLAHSTS, 



23 



The actual area covered by the 716 plantings listed as successful 

 at the close of the season of 1920 was 625 acres, or an average of 

 0.87 acre per planting. This acreage was divided among the four 

 States as follows: Montana, 380 acres; North Dakota, 145 acres; 

 South Dakota, 80 acres : and Wyoming, 20 acres. 



Figure 12 is an outline map of the area in which each township 

 (6 by 6 miles) in which one or more plantings had been made in 

 1917 or in which application had been made for planting in 1918 is 

 represented by a dot. This shows the general distribution of the 

 plantings. 



Table 8.- — Percentafie of trees of each species or kind of stock living at the end 

 of the first season of growth each year from 1916 to 1920, inclusive. 





Plant- 

 ings re- 

 ported. 



Species or kind of stock. 





Year. 



Willow 



(cut- 

 tings). 



W^illow Poplar 

 (root- (cut- 

 ed). tings). 



Poplar 



(root- 

 ed). 



Box 

 elder. 



Green 

 ash. 



Cara- 

 gana. 



White 

 elm. 



Chinese 

 elm. 



Total. 



1916 



44.2 

 63.4 

 34.4 

 59.4 

 40.5 



68.8 



92.6 ; 72.9 

 97.9 . 



96.7 



89.1 

 81.7 

 83.3 

 72.3 



88.2 



93.7 

 85.0 

 77.2 

 68.5 

 79.9 



90.5 



"""mo" 



78.6 







80.0 



1917 



81.2 

 



""'88.'8' 



81.2 



1918 







72.2 



1919. 



45.6 1 





59.4 



1920 











84.8 





i 





1 







Table 8 has been compiled from reports sent in by individual farm- 

 ers at the end of each growing season. Reports are received on only 

 about half the plantings. They contain an actual count of the dead 

 trees and serve as a basis for furnishing replacements. Replacement 

 planting is not practicable after the second season, as the new trees 

 are not able to compete successfully with the older ones. 



Table 9.- 



-Sheltei- ielts planted in 1916 in lohich different tree species toere still 

 alive in 1920. 





Plantings 

 inspected. 





Trees living (p 



er cent). 



State. 



WiUow. 



Poplar. 



Box 

 Elder. 



Green 



ash.i 



Caragana. 



Montana 



214 

 74 

 51 

 10 



53.0 

 59.5 

 71.2 

 60.0 



55.7 

 66.2 

 78.9 

 50.0 



100 

 100 

 100 

 100 



100 

 100 

 100 



100 



North Dakota 



100 



South Dakota 



100 



Wynming 2 



100 









1 Green ash was planted in all the shelter belts in North Dakota, but in only six in Montana, three in 

 South Dakota, and none in AVyoming. 



2 Shelter belts in Wyoming were all in the southeastern part of the State, in Niobrara and Goshen Coun- 

 ties. 



Table 8 shows for each year the percentage of each kind of stock 

 living at the end of its first season in the ground and indicates the 

 relative ease of establishing different species and kinds of stock. In 

 the total of aU species it indicates the degree of success that cooperat- 

 ing farmers have attained in starting their shelter belts. The high- 



