34 



BULLETIN 1264, U. S. DEPARTMENT OF AGRICULTURE. 



species, Engelmann spruce in every case but one shows a much 

 higher survival and a larger percentage of vigorous trees than Norwav 

 spruce. In some cases the differences are as much as 30 to 55 per 

 cent. 



Loss due to snow molding was heavy in many of the plantations 

 under aspen in Utah. Norway spruce is considerably more sus- 

 ceptible to snow molding, even in field plantations, than Engelmann 

 spruce. 



Table 17. — Record of experimental plantations of Norway spruce in the inter- 

 mountain region. 



Site. 



No. 1 - 



80 



83 



Description. 



Ephraim Canyon water- 

 shed, Manti National 

 Forest, Utah: 



Aspen 



Do 



Do 



Do 



Dense aspen 



Aspen, % density 



Aspen, y 2 density 



Aspen, }4 density 



Cleared aspen 



\spen-ehokecherr y 



Manzanita-aspen 



Open 



Brush, temporary 



Burn, Engelmann 



spruce 



Do 



Oak brush 



Do 



Salina Canyon watershed, 

 Fishlake National For- 

 est, Utah: 



Aspen 



Oak brush 



South Fork of Provo River 

 watershed, Uinta Na- 

 tional Forest, Utah : 



Aspen 



Do... 



Sagebrush 



Do 



Big Cottonwood Canyon 

 watershed, Wasatch Na- 

 tional Forest, Utah: 



Brush, temporary 



Dense aspen 



Aspen 



Do 



Do 



Do 



Beaver Creek watershed, 

 Wasatch National For- 

 est, Utah: 



Aspen 



Do 



Do 



Mink ('reck watershed, 

 Cache National Forest, 

 [daho: 



Brush, permanent 



Aspen 



Aspen 



Planting record. 



Age. 



2-1 

 2-1 

 2-1 

 2-1 

 2-1 

 2-1 

 2-1 

 2-1 

 2-1 

 2-1 

 2-1 

 2-1 

 2-1 



2-1 

 2-0 

 2-1 

 2-1 



2-1 



2-1 



2-1 

 2-1 

 2-1 

 2-1 



2-2 

 2-2 

 2-2 

 3-1 

 2-1 

 3-1 



2-1 

 2-1 

 2-1 



2-1 

 2 1 

 2-1 



Date. 



June, 1916 

 May, 1916 

 Mav, 1913 

 May, 1916 

 June, 1917 



-..do 



---do 



...do 



--.do 



Mav, 1916 



—do 



—do 



June, 1913 



_-.do 



Sept.. 1913 

 Mav, 1916 

 May, 1917 



May, 1916 

 ...do 



June, 1917 



..do 



Mav, 1918 

 June, 1919 

 May, 1916 

 June, 1919 



June, 1916 



...do 



...do 



May,1917 



..do 



Apr., 1916 



Percentage of survival by years. 



1st 

 year. 



2d 

 year. 



85 



3d 

 year. 



4th 

 year. 



13 

 3 86 

 50 

 46 

 67 

 41 

 17 

 10 

 23 



26 



Vigor- 

 ous 

 trees. 2 



Per cent. 



13 



7 



63 



47 



13 



50 



16 



4 



8 



15 



38 



23 



13 



Average 



height 

 growth. 2 



Inches. 

 0.62 

 .75 

 1.04 



1.14 



1.02 



.95 



2.61 



1 For full description of sites see paragraphs numbered correspondingly in the appendix, page 51. 

 1 From record at last examination. 

 > By seventh year pi rcentage w 1 1 - 88 

 1 six per cent less the following year. 



I Observation three years later showed 13 per cent. 



.65 

 .60 



1.33 



1.00 



.94 

 1.40 



