14 BULLETIN 1301, U. S. DEPARTMENT OF AGRICULTURE 
DATA FROM ESTABLISHED SHELTER BELTS 
In the late summer of the year the trees are planted, farmers are 
‘furnished cards to report losses during the first growing season. Ap- 
proximately half of the cards are returned. Table 11 gives the per- 
centage of trees of each species that were alive at the end of the first 
season, as shown by the reports received. 
TasBLe 11—Perceniage of irees of each species in the demonstration plantings in 
the northern section of the Great Plains alive at the end of the first year 
Year 
Species 
1916 1917 1918 1919 1920 1921 1922 
EAE CHE LEADS) | ree ee Me Que 2 2 = 2 2S sR ee ee 
“LL AL CEL ee Se eee GS Sa bee a Ghent cae eae eee ee eee 
PAplArTOOLeEO CHEMRES) == = eS - 96. 7 | Ree afi a eee = 
Willow (rooted cuttings). .__.__.___________-- 92.6 67.8 56. 6 45:6) 26 = ee ee 
Ti: Tee UC oe ee Se Se eee $9.1 | 81.7 $3. 3 P38: 88. 2 88. 5 93. 2 
Gre pais Ass eS BO ee ee ee eee 93.7 85. 0 ri fer- 68. 5 79.9 66.9 96.1 
CAST oo int Soi i eee es ee LES eee 90. 0 (8/6) 22 Q1.4 g4. 8 
Watchin a ee eee | i? (82-352 2 eS eS A eae 89.3 
Pwart Asinticetm= S| ee He neces! @ GQ) 2. ee ee 
ining mnie: Seas ee ee) ae ae eee ey ees | ee SE ee en 70.9 
TEVPEEP UY EA Powe Sn eye eS eee ae me (coal RENE ae Sco Ss 27.4 84.4 
(ehnekecherry ne see te ee | eee, |e Ta eer oe WET FS 91.0 86. 7 
Raising iyese =e ee ee a) eee (Ree Le eee ee eee 77.8 
ACK altitl ee ee ee ee a |) eee DRE Bere [ee oa Ree Sa @) 
Nertwest poplar ae ee | ee ‘Ral anomie [ak te ee 89.0 94.9 
SLED RE Dy Fire (5 Ses RS Se eae finn Sle eee $8. 5 eee 
Western velow pine) Se S| eee Ae [Pe ete [in 9.7 32: 32) =e 
apucka gies soe ee see | aaa ee ee eee 25. 4 43.3 | = 
Gaterade hue Spraices 2. ee __ | ee [cee canens) (eee (Ce eee: 46.0) 22 = eee 
EDULIS ELT ee a eR ed Se) PR {ie Se So [ec ee 26:9). 
Black Hills spruce 23.4 
i Only a limited number of these species was used, and no reports were received. 
SUMMARY AND CONCLUSIONS 
During the period 1916-1922, 1,508 cooperative demonstration 
shelter belts were planted in the Great Plains areas of Montana, 
North Dakota, South Dakota, and Wyoming. Of this number 869 
were growing at the close of the summer of 1922. A total of 1,766,023 
trees were used in these plantings. : 
Of the tree species extensively tested, the following seem adapted to 
the climatic conditions generally prevailing: Box elder, green ash, 
white elm, and caragana. 
The following species, which have so far been tested only in a 
limited way, give promise of being suitable for general planting: 
Northwest poplar, chokecherry, buffalo berry, Russian olive, Black 
Hills spruce, white spruce, blue spruce, Scotch pine, and jack pine. 
Extensive tests of the following species show they are not adapted 
for general planting: Norway poplar, Carolina poplar, Russian golden 
willow, and laurel willow. 
Careful preparation of the soil before planting to conserve moisture 
and work out grass and weeds is a prime requisite for successful tree 
planting. Clean summer fallow is the best tillage practice for this 
urpose. 
: Clean cultivation after planting is essential to the continued growth 
of young trees. Neglect in this respect for a single season is likely to 
result in serious damage to the trees. 
